SSC GD 2023 PYQ — Question 48

The correct answer is Option 1 i.e. 120.

Calculations:

Let the given numbers be a, b, and c, and, the fourth proportional be x.

Then, a/b = c/x

⇒ x = bc/a

Similarly, in the given question

⇒ a = 36, b = 48, and c = 90

⇒ x = (48 × 90)/36

⇒ x = 120

Hence, the fourth proportion is 120.