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Finding the Fourth Proportional to 66,641.52, 99,962.32 and 27,217.20

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Solution

The fourth proportional to 66,641.52, 99,962.32 and 27,217.20 is: 40,825.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,641.52 : 99,962.32 = 27,217.20 : x
  2. Step 2: Convert to fraction form
    66,641.52/99,962.32 = 27,217.20/x
  3. Step 3: Cross multiply
    66,641.52x = 99,962.32 × 27,217.20
  4. Step 4: Simplify right side
    66,641.52x = 2,720,694,455.90
  5. Step 5: Solve for x
    x = 2,720,694,455.90/66,641.52
  6. Step 6: Final answer
    x = 40,825.82

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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.