Home / 87,680.25-131,539.85-40,907.61

Finding the Fourth Proportional to 87,680.25, 131,539.85 and 40,907.61

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Solution

The fourth proportional to 87,680.25, 131,539.85 and 40,907.61 is: 61,370.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,680.25 : 131,539.85 = 40,907.61 : x
  2. Step 2: Convert to fraction form
    87,680.25/131,539.85 = 40,907.61/x
  3. Step 3: Cross multiply
    87,680.25x = 131,539.85 × 40,907.61
  4. Step 4: Simplify right side
    87,680.25x = 5,380,980,327.83
  5. Step 5: Solve for x
    x = 5,380,980,327.83/87,680.25
  6. Step 6: Final answer
    x = 61,370.50

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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.