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Finding the Fourth Proportional to 63,136.87, 87,129.39 and 34,456.76

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Solution

The fourth proportional to 63,136.87, 87,129.39 and 34,456.76 is: 47,550.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,136.87 : 87,129.39 = 34,456.76 : x
  2. Step 2: Convert to fraction form
    63,136.87/87,129.39 = 34,456.76/x
  3. Step 3: Cross multiply
    63,136.87x = 87,129.39 × 34,456.76
  4. Step 4: Simplify right side
    63,136.87x = 3,002,196,306.66
  5. Step 5: Solve for x
    x = 3,002,196,306.66/63,136.87
  6. Step 6: Final answer
    x = 47,550.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.