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Finding the Fourth Proportional to 89,906.49, 124,069.46 and 49,620.20

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Solution

The fourth proportional to 89,906.49, 124,069.46 and 49,620.20 is: 68,475.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,906.49 : 124,069.46 = 49,620.20 : x
  2. Step 2: Convert to fraction form
    89,906.49/124,069.46 = 49,620.20/x
  3. Step 3: Cross multiply
    89,906.49x = 124,069.46 × 49,620.20
  4. Step 4: Simplify right side
    89,906.49x = 6,156,350,550.64
  5. Step 5: Solve for x
    x = 6,156,350,550.64/89,906.49
  6. Step 6: Final answer
    x = 68,475.04

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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.