Home / 87,755.20-131,643.60-31,586.56

Finding the Fourth Proportional to 87,755.20, 131,643.60 and 31,586.56

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Solution

The fourth proportional to 87,755.20, 131,643.60 and 31,586.56 is: 47,383.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,755.20 : 131,643.60 = 31,586.56 : x
  2. Step 2: Convert to fraction form
    87,755.20/131,643.60 = 31,586.56/x
  3. Step 3: Cross multiply
    87,755.20x = 131,643.60 × 31,586.56
  4. Step 4: Simplify right side
    87,755.20x = 4,158,168,470.02
  5. Step 5: Solve for x
    x = 4,158,168,470.02/87,755.20
  6. Step 6: Final answer
    x = 47,383.73

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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.