Home / 87,841.53-131,456.12-71,861.85

Finding the Fourth Proportional to 87,841.53, 131,456.12 and 71,861.85

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Solution

The fourth proportional to 87,841.53, 131,456.12 and 71,861.85 is: 107,542.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,841.53 : 131,456.12 = 71,861.85 : x
  2. Step 2: Convert to fraction form
    87,841.53/131,456.12 = 71,861.85/x
  3. Step 3: Cross multiply
    87,841.53x = 131,456.12 × 71,861.85
  4. Step 4: Simplify right side
    87,841.53x = 9,446,679,617.71
  5. Step 5: Solve for x
    x = 9,446,679,617.71/87,841.53
  6. Step 6: Final answer
    x = 107,542.29

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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.