Home / 87,481.56-131,289.30-45,396.12

Finding the Fourth Proportional to 87,481.56, 131,289.30 and 45,396.12

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Solution

The fourth proportional to 87,481.56, 131,289.30 and 45,396.12 is: 68,128.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,481.56 : 131,289.30 = 45,396.12 : x
  2. Step 2: Convert to fraction form
    87,481.56/131,289.30 = 45,396.12/x
  3. Step 3: Cross multiply
    87,481.56x = 131,289.30 × 45,396.12
  4. Step 4: Simplify right side
    87,481.56x = 5,960,024,817.52
  5. Step 5: Solve for x
    x = 5,960,024,817.52/87,481.56
  6. Step 6: Final answer
    x = 68,128.93

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1.5x scale

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.