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Finding the Fourth Proportional to 66,940.52, 100,414.12 and 21,957.88

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Solution

The fourth proportional to 66,940.52, 100,414.12 and 21,957.88 is: 32,937.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,940.52 : 100,414.12 = 21,957.88 : x
  2. Step 2: Convert to fraction form
    66,940.52/100,414.12 = 21,957.88/x
  3. Step 3: Cross multiply
    66,940.52x = 100,414.12 × 21,957.88
  4. Step 4: Simplify right side
    66,940.52x = 2,204,881,197.27
  5. Step 5: Solve for x
    x = 2,204,881,197.27/66,940.52
  6. Step 6: Final answer
    x = 32,937.92

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1.5x scale

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.