Home / 89,667.75-123,740.57-49,380.66

Finding the Fourth Proportional to 89,667.75, 123,740.57 and 49,380.66

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Solution

The fourth proportional to 89,667.75, 123,740.57 and 49,380.66 is: 68,144.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,667.75 : 123,740.57 = 49,380.66 : x
  2. Step 2: Convert to fraction form
    89,667.75/123,740.57 = 49,380.66/x
  3. Step 3: Cross multiply
    89,667.75x = 123,740.57 × 49,380.66
  4. Step 4: Simplify right side
    89,667.75x = 6,110,390,489.62
  5. Step 5: Solve for x
    x = 6,110,390,489.62/89,667.75
  6. Step 6: Final answer
    x = 68,144.79

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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.