The Count of Things

Bluebulb Projects' The Measure of Things presents:

It's about the number of Teeth in a Great White Shark's Mouth

(Carcharodon carcharias) (average; including developing rows)

It's about nine-tenths the number of Countries in Africa

In other words, 48 is 0.860 times the count of Countries in Africa, and the count of Countries in Africa is 1.20 times that amount.

(2016 figures) (sovereign states recognized by the UN only)

It's about two-thirds the number of Submarines in the US Navy

In other words, the count of Submarines in the US Navy is 1.50 times 48.

(a.k.a. Subs) (includes all types, all classes) (2015 figures)

It's about one-and-four-fifths times the number of Countries in the European Union

In other words, the count of Countries in the European Union is 0.560 times 48.

(a.k.a. EU) (2016 figures)

It's about half the number of Keys on a Piano

In other words, 48 is 0.550 times the count of Keys on a Piano, and the count of Keys on a Piano is 1.80 times that amount.

(Moden layout; A₀ to C₇)

It's about half the number of Wolves in Yellowstone National Park

In other words, 48 is 0.4620 times the count of Wolves in Yellowstone National Park, and the count of Wolves in Yellowstone National Park is 2.160 times that amount.

(a.k.a. Henihco'oo; a.k.a. Héetíhco'oo) (December 2014 figures; Wyoming Park area)
As of the 2014 population count, there were 104 wolves living in Yellowstone National Park, in twelve packs. All of the wolves now living in the Park are thought to have descended from the 66 wolves (re)introduced into the Park in 1995-96.

It's about two-fifths the number of Elements on the Periodic Table

In other words, 48 is 0.4070 times the count of Elements on the Periodic Table, and the count of Elements on the Periodic Table is 2.460 times that amount.

(a.k.a. Periodic Table of the Elements, a.k.a chemical elements) (confirmed elements as of 2016)