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Finding the Fourth Proportional to 82,911.40, 124,367.10 and 27,500.20

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Solution

The fourth proportional to 82,911.40, 124,367.10 and 27,500.20 is: 41,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,911.40 : 124,367.10 = 27,500.20 : x
  2. Step 2: Convert to fraction form
    82,911.40/124,367.10 = 27,500.20/x
  3. Step 3: Cross multiply
    82,911.40x = 124,367.10 × 27,500.20
  4. Step 4: Simplify right side
    82,911.40x = 3,420,120,123.42
  5. Step 5: Solve for x
    x = 3,420,120,123.42/82,911.40
  6. Step 6: Final answer
    x = 41,250.30

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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.