Home / 87,675.10-131,512.65-28,512.70

Finding the Fourth Proportional to 87,675.10, 131,512.65 and 28,512.70

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Solution

The fourth proportional to 87,675.10, 131,512.65 and 28,512.70 is: 42,769.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,675.10 : 131,512.65 = 28,512.70 : x
  2. Step 2: Convert to fraction form
    87,675.10/131,512.65 = 28,512.70/x
  3. Step 3: Cross multiply
    87,675.10x = 131,512.65 × 28,512.70
  4. Step 4: Simplify right side
    87,675.10x = 3,749,780,735.66
  5. Step 5: Solve for x
    x = 3,749,780,735.66/87,675.10
  6. Step 6: Final answer
    x = 42,769.05

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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.