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Finding the Fourth Proportional to 66,996.79, 100,456.91 and 27,521.44

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Solution

The fourth proportional to 66,996.79, 100,456.91 and 27,521.44 is: 41,266.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,996.79 : 100,456.91 = 27,521.44 : x
  2. Step 2: Convert to fraction form
    66,996.79/100,456.91 = 27,521.44/x
  3. Step 3: Cross multiply
    66,996.79x = 100,456.91 × 27,521.44
  4. Step 4: Simplify right side
    66,996.79x = 2,764,718,535.61
  5. Step 5: Solve for x
    x = 2,764,718,535.61/66,996.79
  6. Step 6: Final answer
    x = 41,266.43

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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.