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Finding the Fourth Proportional to 66,757.98, 92,136.51 and 38,472.78

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Solution

The fourth proportional to 66,757.98, 92,136.51 and 38,472.78 is: 53,098.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,757.98 : 92,136.51 = 38,472.78 : x
  2. Step 2: Convert to fraction form
    66,757.98/92,136.51 = 38,472.78/x
  3. Step 3: Cross multiply
    66,757.98x = 92,136.51 × 38,472.78
  4. Step 4: Simplify right side
    66,757.98x = 3,544,747,679.20
  5. Step 5: Solve for x
    x = 3,544,747,679.20/66,757.98
  6. Step 6: Final answer
    x = 53,098.49

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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.