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Finding the Fourth Proportional to 82,900.70, 124,375.62 and 38,553.80

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Solution

The fourth proportional to 82,900.70, 124,375.62 and 38,553.80 is: 57,842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,900.70 : 124,375.62 = 38,553.80 : x
  2. Step 2: Convert to fraction form
    82,900.70/124,375.62 = 38,553.80/x
  3. Step 3: Cross multiply
    82,900.70x = 124,375.62 × 38,553.80
  4. Step 4: Simplify right side
    82,900.70x = 4,795,152,778.36
  5. Step 5: Solve for x
    x = 4,795,152,778.36/82,900.70
  6. Step 6: Final answer
    x = 57,842.13

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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.