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Finding the Fourth Proportional to 63,694.87, 87,698.15 and 57,789.97

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Solution

The fourth proportional to 63,694.87, 87,698.15 and 57,789.97 is: 79,568.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,694.87 : 87,698.15 = 57,789.97 : x
  2. Step 2: Convert to fraction form
    63,694.87/87,698.15 = 57,789.97/x
  3. Step 3: Cross multiply
    63,694.87x = 87,698.15 × 57,789.97
  4. Step 4: Simplify right side
    63,694.87x = 5,068,073,168.61
  5. Step 5: Solve for x
    x = 5,068,073,168.61/63,694.87
  6. Step 6: Final answer
    x = 79,568.00

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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.