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Finding the Fourth Proportional to 63,672.26, 87,831.12 and 39,757.42

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Solution

The fourth proportional to 63,672.26, 87,831.12 and 39,757.42 is: 54,842.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,672.26 : 87,831.12 = 39,757.42 : x
  2. Step 2: Convert to fraction form
    63,672.26/87,831.12 = 39,757.42/x
  3. Step 3: Cross multiply
    63,672.26x = 87,831.12 × 39,757.42
  4. Step 4: Simplify right side
    63,672.26x = 3,491,938,726.91
  5. Step 5: Solve for x
    x = 3,491,938,726.91/63,672.26
  6. Step 6: Final answer
    x = 54,842.39

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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.