42 is 75 percent of what number?

To find the number that 42 is 75% of, you can set up a proportion. Let x represent the unknown number. The proportion would be: 42 = 0.75x. To solve for x, divide both sides by 0.75, giving you x = 42 / 0.75 = 56. Therefore, 42 is 75% of 56.