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Finding the Fourth Proportional to 83,339.10, 124,862.82 and 69,388.80

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Solution

The fourth proportional to 83,339.10, 124,862.82 and 69,388.80 is: 103,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,339.10 : 124,862.82 = 69,388.80 : x
  2. Step 2: Convert to fraction form
    83,339.10/124,862.82 = 69,388.80/x
  3. Step 3: Cross multiply
    83,339.10x = 124,862.82 × 69,388.80
  4. Step 4: Simplify right side
    83,339.10x = 8,664,081,244.42
  5. Step 5: Solve for x
    x = 8,664,081,244.42/83,339.10
  6. Step 6: Final answer
    x = 103,961.78

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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.