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Finding the Fourth Proportional to 63,865.88, 88,128.24 and 39,332.78

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Solution

The fourth proportional to 63,865.88, 88,128.24 and 39,332.78 is: 54,275.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,865.88 : 88,128.24 = 39,332.78 : x
  2. Step 2: Convert to fraction form
    63,865.88/88,128.24 = 39,332.78/x
  3. Step 3: Cross multiply
    63,865.88x = 88,128.24 × 39,332.78
  4. Step 4: Simplify right side
    63,865.88x = 3,466,328,235.07
  5. Step 5: Solve for x
    x = 3,466,328,235.07/63,865.88
  6. Step 6: Final answer
    x = 54,275.12

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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.