Home / 87,647.16-131,470.74-80,043.96

Finding the Fourth Proportional to 87,647.16, 131,470.74 and 80,043.96

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Solution

The fourth proportional to 87,647.16, 131,470.74 and 80,043.96 is: 120,065.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,647.16 : 131,470.74 = 80,043.96 : x
  2. Step 2: Convert to fraction form
    87,647.16/131,470.74 = 80,043.96/x
  3. Step 3: Cross multiply
    87,647.16x = 131,470.74 × 80,043.96
  4. Step 4: Simplify right side
    87,647.16x = 10,523,438,653.73
  5. Step 5: Solve for x
    x = 10,523,438,653.73/87,647.16
  6. Step 6: Final answer
    x = 120,065.94

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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.