Home / 87,608.20-131,444.70-28,445.80

Finding the Fourth Proportional to 87,608.20, 131,444.70 and 28,445.80

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Solution

The fourth proportional to 87,608.20, 131,444.70 and 28,445.80 is: 42,679.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,608.20 : 131,444.70 = 28,445.80 : x
  2. Step 2: Convert to fraction form
    87,608.20/131,444.70 = 28,445.80/x
  3. Step 3: Cross multiply
    87,608.20x = 131,444.70 × 28,445.80
  4. Step 4: Simplify right side
    87,608.20x = 3,739,049,647.26
  5. Step 5: Solve for x
    x = 3,739,049,647.26/87,608.20
  6. Step 6: Final answer
    x = 42,679.22

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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.