Home / 87,680.10-131,606.55-43,356.90

Finding the Fourth Proportional to 87,680.10, 131,606.55 and 43,356.90

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Solution

The fourth proportional to 87,680.10, 131,606.55 and 43,356.90 is: 65,078.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,680.10 : 131,606.55 = 43,356.90 : x
  2. Step 2: Convert to fraction form
    87,680.10/131,606.55 = 43,356.90/x
  3. Step 3: Cross multiply
    87,680.10x = 131,606.55 × 43,356.90
  4. Step 4: Simplify right side
    87,680.10x = 5,706,052,027.70
  5. Step 5: Solve for x
    x = 5,706,052,027.70/87,680.10
  6. Step 6: Final answer
    x = 65,078.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.