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Finding the Fourth Proportional to 66,753.72, 92,119.68 and 38,458.80

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Solution

The fourth proportional to 66,753.72, 92,119.68 and 38,458.80 is: 53,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,753.72 : 92,119.68 = 38,458.80 : x
  2. Step 2: Convert to fraction form
    66,753.72/92,119.68 = 38,458.80/x
  3. Step 3: Cross multiply
    66,753.72x = 92,119.68 × 38,458.80
  4. Step 4: Simplify right side
    66,753.72x = 3,542,812,349.18
  5. Step 5: Solve for x
    x = 3,542,812,349.18/66,753.72
  6. Step 6: Final answer
    x = 53,072.88

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1.5x scale

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.