Home / 89,669.71-123,739.88-49,385.17

Finding the Fourth Proportional to 89,669.71, 123,739.88 and 49,385.17

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Solution

The fourth proportional to 89,669.71, 123,739.88 and 49,385.17 is: 68,149.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,669.71 : 123,739.88 = 49,385.17 : x
  2. Step 2: Convert to fraction form
    89,669.71/123,739.88 = 49,385.17/x
  3. Step 3: Cross multiply
    89,669.71x = 123,739.88 × 49,385.17
  4. Step 4: Simplify right side
    89,669.71x = 6,110,914,143.95
  5. Step 5: Solve for x
    x = 6,110,914,143.95/89,669.71
  6. Step 6: Final answer
    x = 68,149.15

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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.