Home / 87,854.10-131,781.15-21,294.23

Finding the Fourth Proportional to 87,854.10, 131,781.15 and 21,294.23

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Solution

The fourth proportional to 87,854.10, 131,781.15 and 21,294.23 is: 31,941.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.10 : 131,781.15 = 21,294.23 : x
  2. Step 2: Convert to fraction form
    87,854.10/131,781.15 = 21,294.23/x
  3. Step 3: Cross multiply
    87,854.10x = 131,781.15 × 21,294.23
  4. Step 4: Simplify right side
    87,854.10x = 2,806,178,200.13
  5. Step 5: Solve for x
    x = 2,806,178,200.13/87,854.10
  6. Step 6: Final answer
    x = 31,941.35

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Double scale
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Similar ratio
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1.5x scale

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.