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Finding the Fourth Proportional to 66,996.27, 100,363.02 and 38,857.20

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Solution

The fourth proportional to 66,996.27, 100,363.02 and 38,857.20 is: 58,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,996.27 : 100,363.02 = 38,857.20 : x
  2. Step 2: Convert to fraction form
    66,996.27/100,363.02 = 38,857.20/x
  3. Step 3: Cross multiply
    66,996.27x = 100,363.02 × 38,857.20
  4. Step 4: Simplify right side
    66,996.27x = 3,899,825,940.74
  5. Step 5: Solve for x
    x = 3,899,825,940.74/66,996.27
  6. Step 6: Final answer
    x = 58,209.60

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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.