Home / 87,342.10-131,040.84-31,181

Finding the Fourth Proportional to 87,342.10, 131,040.84 and 31,181

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Solution

The fourth proportional to 87,342.10, 131,040.84 and 31,181 is: 46,781.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,342.10 : 131,040.84 = 31,181 : x
  2. Step 2: Convert to fraction form
    87,342.10/131,040.84 = 31,181/x
  3. Step 3: Cross multiply
    87,342.10x = 131,040.84 × 31,181
  4. Step 4: Simplify right side
    87,342.10x = 4,085,984,432.04
  5. Step 5: Solve for x
    x = 4,085,984,432.04/87,342.10
  6. Step 6: Final answer
    x = 46,781.39

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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.