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Finding the Fourth Proportional to 87,589.60, 131,449.20 and 57,997.60

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Solution

The fourth proportional to 87,589.60, 131,449.20 and 57,997.60 is: 87,039.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,589.60 : 131,449.20 = 57,997.60 : x
  2. Step 2: Convert to fraction form
    87,589.60/131,449.20 = 57,997.60/x
  3. Step 3: Cross multiply
    87,589.60x = 131,449.20 × 57,997.60
  4. Step 4: Simplify right side
    87,589.60x = 7,623,738,121.92
  5. Step 5: Solve for x
    x = 7,623,738,121.92/87,589.60
  6. Step 6: Final answer
    x = 87,039.31

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1.5x scale

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.