Home / 87,811.20-131,716.80-43,469.10

Finding the Fourth Proportional to 87,811.20, 131,716.80 and 43,469.10

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Solution

The fourth proportional to 87,811.20, 131,716.80 and 43,469.10 is: 65,203.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,811.20 : 131,716.80 = 43,469.10 : x
  2. Step 2: Convert to fraction form
    87,811.20/131,716.80 = 43,469.10/x
  3. Step 3: Cross multiply
    87,811.20x = 131,716.80 × 43,469.10
  4. Step 4: Simplify right side
    87,811.20x = 5,725,610,750.88
  5. Step 5: Solve for x
    x = 5,725,610,750.88/87,811.20
  6. Step 6: Final answer
    x = 65,203.65

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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.