Home / 87,580.28-120,861.15-49,340.28

Finding the Fourth Proportional to 87,580.28, 120,861.15 and 49,340.28

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Solution

The fourth proportional to 87,580.28, 120,861.15 and 49,340.28 is: 68,089.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,580.28 : 120,861.15 = 49,340.28 : x
  2. Step 2: Convert to fraction form
    87,580.28/120,861.15 = 49,340.28/x
  3. Step 3: Cross multiply
    87,580.28x = 120,861.15 × 49,340.28
  4. Step 4: Simplify right side
    87,580.28x = 5,963,322,982.12
  5. Step 5: Solve for x
    x = 5,963,322,982.12/87,580.28
  6. Step 6: Final answer
    x = 68,089.79

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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.