Home / 87,867-131,780.70-40,436.56

Finding the Fourth Proportional to 87,867, 131,780.70 and 40,436.56

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Solution

The fourth proportional to 87,867, 131,780.70 and 40,436.56 is: 60,645.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,867 : 131,780.70 = 40,436.56 : x
  2. Step 2: Convert to fraction form
    87,867/131,780.70 = 40,436.56/x
  3. Step 3: Cross multiply
    87,867x = 131,780.70 × 40,436.56
  4. Step 4: Simplify right side
    87,867x = 5,328,758,182.39
  5. Step 5: Solve for x
    x = 5,328,758,182.39/87,867
  6. Step 6: Final answer
    x = 60,645.73

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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.