Home / 87,715.20-131,508-72,863.04

Finding the Fourth Proportional to 87,715.20, 131,508 and 72,863.04

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Solution

The fourth proportional to 87,715.20, 131,508 and 72,863.04 is: 109,240.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,715.20 : 131,508 = 72,863.04 : x
  2. Step 2: Convert to fraction form
    87,715.20/131,508 = 72,863.04/x
  3. Step 3: Cross multiply
    87,715.20x = 131,508 × 72,863.04
  4. Step 4: Simplify right side
    87,715.20x = 9,582,072,664.32
  5. Step 5: Solve for x
    x = 9,582,072,664.32/87,715.20
  6. Step 6: Final answer
    x = 109,240.73

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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.