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Finding the Fourth Proportional to 88,609.80, 122,278.57 and 52,781.28

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Solution

The fourth proportional to 88,609.80, 122,278.57 and 52,781.28 is: 72,836.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,609.80 : 122,278.57 = 52,781.28 : x
  2. Step 2: Convert to fraction form
    88,609.80/122,278.57 = 52,781.28/x
  3. Step 3: Cross multiply
    88,609.80x = 122,278.57 × 52,781.28
  4. Step 4: Simplify right side
    88,609.80x = 6,454,019,441.17
  5. Step 5: Solve for x
    x = 6,454,019,441.17/88,609.80
  6. Step 6: Final answer
    x = 72,836.41

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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.