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Finding the Fourth Proportional to 63,694.62, 87,697.80 and 57,789.72

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Solution

The fourth proportional to 63,694.62, 87,697.80 and 57,789.72 is: 79,567.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,694.62 : 87,697.80 = 57,789.72 : x
  2. Step 2: Convert to fraction form
    63,694.62/87,697.80 = 57,789.72/x
  3. Step 3: Cross multiply
    63,694.62x = 87,697.80 × 57,789.72
  4. Step 4: Simplify right side
    63,694.62x = 5,068,031,306.62
  5. Step 5: Solve for x
    x = 5,068,031,306.62/63,694.62
  6. Step 6: Final answer
    x = 79,567.65

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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.