Home / 89,725.40-123,819.42-49,442.90

Finding the Fourth Proportional to 89,725.40, 123,819.42 and 49,442.90

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Solution

The fourth proportional to 89,725.40, 123,819.42 and 49,442.90 is: 68,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,725.40 : 123,819.42 = 49,442.90 : x
  2. Step 2: Convert to fraction form
    89,725.40/123,819.42 = 49,442.90/x
  3. Step 3: Cross multiply
    89,725.40x = 123,819.42 × 49,442.90
  4. Step 4: Simplify right side
    89,725.40x = 6,121,991,201.12
  5. Step 5: Solve for x
    x = 6,121,991,201.12/89,725.40
  6. Step 6: Final answer
    x = 68,230.30

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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.