Home / 87,403.24-131,065.98-66,563.56

Finding the Fourth Proportional to 87,403.24, 131,065.98 and 66,563.56

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Solution

The fourth proportional to 87,403.24, 131,065.98 and 66,563.56 is: 99,815.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,403.24 : 131,065.98 = 66,563.56 : x
  2. Step 2: Convert to fraction form
    87,403.24/131,065.98 = 66,563.56/x
  3. Step 3: Cross multiply
    87,403.24x = 131,065.98 × 66,563.56
  4. Step 4: Simplify right side
    87,403.24x = 8,724,218,223.69
  5. Step 5: Solve for x
    x = 8,724,218,223.69/87,403.24
  6. Step 6: Final answer
    x = 99,815.73

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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.