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Finding the Fourth Proportional to 88,042.80, 132,355.80 and 75,212.40

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Solution

The fourth proportional to 88,042.80, 132,355.80 and 75,212.40 is: 113,067.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,042.80 : 132,355.80 = 75,212.40 : x
  2. Step 2: Convert to fraction form
    88,042.80/132,355.80 = 75,212.40/x
  3. Step 3: Cross multiply
    88,042.80x = 132,355.80 × 75,212.40
  4. Step 4: Simplify right side
    88,042.80x = 9,954,797,371.92
  5. Step 5: Solve for x
    x = 9,954,797,371.92/88,042.80
  6. Step 6: Final answer
    x = 113,067.71

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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.