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Finding the Fourth Proportional to 71,851.68, 107,799.92 and 36,815.92

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Solution

The fourth proportional to 71,851.68, 107,799.92 and 36,815.92 is: 55,235.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,851.68 : 107,799.92 = 36,815.92 : x
  2. Step 2: Convert to fraction form
    71,851.68/107,799.92 = 36,815.92/x
  3. Step 3: Cross multiply
    71,851.68x = 107,799.92 × 36,815.92
  4. Step 4: Simplify right side
    71,851.68x = 3,968,753,230.73
  5. Step 5: Solve for x
    x = 3,968,753,230.73/71,851.68
  6. Step 6: Final answer
    x = 55,235.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.