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Finding the Fourth Proportional to 63,687.60, 87,656.88 and 56,084.13

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Solution

The fourth proportional to 63,687.60, 87,656.88 and 56,084.13 is: 77,191.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,687.60 : 87,656.88 = 56,084.13 : x
  2. Step 2: Convert to fraction form
    63,687.60/87,656.88 = 56,084.13/x
  3. Step 3: Cross multiply
    63,687.60x = 87,656.88 × 56,084.13
  4. Step 4: Simplify right side
    63,687.60x = 4,916,160,063.63
  5. Step 5: Solve for x
    x = 4,916,160,063.63/63,687.60
  6. Step 6: Final answer
    x = 77,191.79

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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.