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Finding the Fourth Proportional to 63,819.78, 88,081.20 and 38,340.33

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Solution

The fourth proportional to 63,819.78, 88,081.20 and 38,340.33 is: 52,915.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,819.78 : 88,081.20 = 38,340.33 : x
  2. Step 2: Convert to fraction form
    63,819.78/88,081.20 = 38,340.33/x
  3. Step 3: Cross multiply
    63,819.78x = 88,081.20 × 38,340.33
  4. Step 4: Simplify right side
    63,819.78x = 3,377,062,274.80
  5. Step 5: Solve for x
    x = 3,377,062,274.80/63,819.78
  6. Step 6: Final answer
    x = 52,915.61

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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.