Home / 87,690.70-131,549.84-28,512.53

Finding the Fourth Proportional to 87,690.70, 131,549.84 and 28,512.53

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Solution

The fourth proportional to 87,690.70, 131,549.84 and 28,512.53 is: 42,773.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.70 : 131,549.84 = 28,512.53 : x
  2. Step 2: Convert to fraction form
    87,690.70/131,549.84 = 28,512.53/x
  3. Step 3: Cross multiply
    87,690.70x = 131,549.84 × 28,512.53
  4. Step 4: Simplify right side
    87,690.70x = 3,750,818,759.50
  5. Step 5: Solve for x
    x = 3,750,818,759.50/87,690.70
  6. Step 6: Final answer
    x = 42,773.28

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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.