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Finding the Fourth Proportional to 63,668.28, 87,898.86 and 42,517.56

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Solution

The fourth proportional to 63,668.28, 87,898.86 and 42,517.56 is: 58,698.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,668.28 : 87,898.86 = 42,517.56 : x
  2. Step 2: Convert to fraction form
    63,668.28/87,898.86 = 42,517.56/x
  3. Step 3: Cross multiply
    63,668.28x = 87,898.86 × 42,517.56
  4. Step 4: Simplify right side
    63,668.28x = 3,737,245,053.98
  5. Step 5: Solve for x
    x = 3,737,245,053.98/63,668.28
  6. Step 6: Final answer
    x = 58,698.70

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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.