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Finding the Fourth Proportional to 66,680, 100,025.28 and 22,306.96

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Solution

The fourth proportional to 66,680, 100,025.28 and 22,306.96 is: 33,462.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,680 : 100,025.28 = 22,306.96 : x
  2. Step 2: Convert to fraction form
    66,680/100,025.28 = 22,306.96/x
  3. Step 3: Cross multiply
    66,680x = 100,025.28 × 22,306.96
  4. Step 4: Simplify right side
    66,680x = 2,231,259,919.95
  5. Step 5: Solve for x
    x = 2,231,259,919.95/66,680
  6. Step 6: Final answer
    x = 33,462.21

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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.