Home / 87,710.10-131,723.55-76,823.70

Finding the Fourth Proportional to 87,710.10, 131,723.55 and 76,823.70

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Solution

The fourth proportional to 87,710.10, 131,723.55 and 76,823.70 is: 115,374.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,710.10 : 131,723.55 = 76,823.70 : x
  2. Step 2: Convert to fraction form
    87,710.10/131,723.55 = 76,823.70/x
  3. Step 3: Cross multiply
    87,710.10x = 131,723.55 × 76,823.70
  4. Step 4: Simplify right side
    87,710.10x = 10,119,490,488.14
  5. Step 5: Solve for x
    x = 10,119,490,488.14/87,710.10
  6. Step 6: Final answer
    x = 115,374.29

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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.