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Finding the Fourth Proportional to 63,136.76, 87,129.22 and 34,456.64

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Solution

The fourth proportional to 63,136.76, 87,129.22 and 34,456.64 is: 47,550.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,136.76 : 87,129.22 = 34,456.64 : x
  2. Step 2: Convert to fraction form
    63,136.76/87,129.22 = 34,456.64/x
  3. Step 3: Cross multiply
    63,136.76x = 87,129.22 × 34,456.64
  4. Step 4: Simplify right side
    63,136.76x = 3,002,180,167.02
  5. Step 5: Solve for x
    x = 3,002,180,167.02/63,136.76
  6. Step 6: Final answer
    x = 47,550.43

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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.