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Finding the Fourth Proportional to 63,644.80, 87,789.48 and 39,104.86

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Solution

The fourth proportional to 63,644.80, 87,789.48 and 39,104.86 is: 53,939.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,644.80 : 87,789.48 = 39,104.86 : x
  2. Step 2: Convert to fraction form
    63,644.80/87,789.48 = 39,104.86/x
  3. Step 3: Cross multiply
    63,644.80x = 87,789.48 × 39,104.86
  4. Step 4: Simplify right side
    63,644.80x = 3,432,995,324.87
  5. Step 5: Solve for x
    x = 3,432,995,324.87/63,644.80
  6. Step 6: Final answer
    x = 53,939.92

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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.