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Finding the Fourth Proportional to 88,358.29, 122,008.02 and 81,947.55

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Solution

The fourth proportional to 88,358.29, 122,008.02 and 81,947.55 is: 113,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,358.29 : 122,008.02 = 81,947.55 : x
  2. Step 2: Convert to fraction form
    88,358.29/122,008.02 = 81,947.55/x
  3. Step 3: Cross multiply
    88,358.29x = 122,008.02 × 81,947.55
  4. Step 4: Simplify right side
    88,358.29x = 9,998,257,299.57
  5. Step 5: Solve for x
    x = 9,998,257,299.57/88,358.29
  6. Step 6: Final answer
    x = 113,155.85

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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.