Home / 87,405.90-131,147.37-45,843.18

Finding the Fourth Proportional to 87,405.90, 131,147.37 and 45,843.18

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Solution

The fourth proportional to 87,405.90, 131,147.37 and 45,843.18 is: 68,784.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,405.90 : 131,147.37 = 45,843.18 : x
  2. Step 2: Convert to fraction form
    87,405.90/131,147.37 = 45,843.18/x
  3. Step 3: Cross multiply
    87,405.90x = 131,147.37 × 45,843.18
  4. Step 4: Simplify right side
    87,405.90x = 6,012,212,489.44
  5. Step 5: Solve for x
    x = 6,012,212,489.44/87,405.90
  6. Step 6: Final answer
    x = 68,784.97

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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.