Home / 87,713.20-131,505-72,861.04

Finding the Fourth Proportional to 87,713.20, 131,505 and 72,861.04

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Solution

The fourth proportional to 87,713.20, 131,505 and 72,861.04 is: 109,237.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,713.20 : 131,505 = 72,861.04 : x
  2. Step 2: Convert to fraction form
    87,713.20/131,505 = 72,861.04/x
  3. Step 3: Cross multiply
    87,713.20x = 131,505 × 72,861.04
  4. Step 4: Simplify right side
    87,713.20x = 9,581,591,065.20
  5. Step 5: Solve for x
    x = 9,581,591,065.20/87,713.20
  6. Step 6: Final answer
    x = 109,237.73

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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.