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Finding the Fourth Proportional to 63,558, 87,399 and 55,159.92

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Solution

The fourth proportional to 63,558, 87,399 and 55,159.92 is: 75,850.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,558 : 87,399 = 55,159.92 : x
  2. Step 2: Convert to fraction form
    63,558/87,399 = 55,159.92/x
  3. Step 3: Cross multiply
    63,558x = 87,399 × 55,159.92
  4. Step 4: Simplify right side
    63,558x = 4,820,921,848.08
  5. Step 5: Solve for x
    x = 4,820,921,848.08/63,558
  6. Step 6: Final answer
    x = 75,850.75

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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.