Finding the Fourth Proportional to 81,072.09, 121,525.52 and 45,937.53
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Solution
The fourth proportional to 81,072.09, 121,525.52 and 45,937.53 is: 68,859.48
Step by Step Solution
- Step 1: Write the proportion equation
81,072.09 : 121,525.52 = 45,937.53 : x - Step 2: Convert to fraction form
81,072.09/121,525.52 = 45,937.53/x - Step 3: Cross multiply
81,072.09x = 121,525.52 × 45,937.53 - Step 4: Simplify right side
81,072.09x = 5,582,581,991.08 - Step 5: Solve for x
x = 5,582,581,991.08/81,072.09 - Step 6: Final answer
x = 68,859.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.