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Finding the Fourth Proportional to 63,390.72, 87,489.36 and 36,175.62

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Solution

The fourth proportional to 63,390.72, 87,489.36 and 36,175.62 is: 49,928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,390.72 : 87,489.36 = 36,175.62 : x
  2. Step 2: Convert to fraction form
    63,390.72/87,489.36 = 36,175.62/x
  3. Step 3: Cross multiply
    63,390.72x = 87,489.36 × 36,175.62
  4. Step 4: Simplify right side
    63,390.72x = 3,164,981,841.40
  5. Step 5: Solve for x
    x = 3,164,981,841.40/63,390.72
  6. Step 6: Final answer
    x = 49,928.16

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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.