Home / 87,627.20-131,440.80-61,361.60

Finding the Fourth Proportional to 87,627.20, 131,440.80 and 61,361.60

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Solution

The fourth proportional to 87,627.20, 131,440.80 and 61,361.60 is: 92,042.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,627.20 : 131,440.80 = 61,361.60 : x
  2. Step 2: Convert to fraction form
    87,627.20/131,440.80 = 61,361.60/x
  3. Step 3: Cross multiply
    87,627.20x = 131,440.80 × 61,361.60
  4. Step 4: Simplify right side
    87,627.20x = 8,065,417,793.28
  5. Step 5: Solve for x
    x = 8,065,417,793.28/87,627.20
  6. Step 6: Final answer
    x = 92,042.40

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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.