Bluebulb Projects' The Measure of Things presents:
43 is about one-third the number of Elements on the Periodic Table
In other words, it's 0.3640 times the count of Elements on the Periodic Table, and the count of Elements on the Periodic Table is 2.750 times that amount.
(a.k.a. Periodic Table of the Elements, a.k.a chemical elements) (confirmed elements as of 2016)