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Finding the Fourth Proportional to 63,866.88, 88,129.62 and 39,333.78

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Solution

The fourth proportional to 63,866.88, 88,129.62 and 39,333.78 is: 54,276.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,866.88 : 88,129.62 = 39,333.78 : x
  2. Step 2: Convert to fraction form
    63,866.88/88,129.62 = 39,333.78/x
  3. Step 3: Cross multiply
    63,866.88x = 88,129.62 × 39,333.78
  4. Step 4: Simplify right side
    63,866.88x = 3,466,471,084.56
  5. Step 5: Solve for x
    x = 3,466,471,084.56/63,866.88
  6. Step 6: Final answer
    x = 54,276.51

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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.