Home / 87,966.70-131,949.28-31,785.55

Finding the Fourth Proportional to 87,966.70, 131,949.28 and 31,785.55

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Solution

The fourth proportional to 87,966.70, 131,949.28 and 31,785.55 is: 47,678.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,966.70 : 131,949.28 = 31,785.55 : x
  2. Step 2: Convert to fraction form
    87,966.70/131,949.28 = 31,785.55/x
  3. Step 3: Cross multiply
    87,966.70x = 131,949.28 × 31,785.55
  4. Step 4: Simplify right side
    87,966.70x = 4,194,080,436.90
  5. Step 5: Solve for x
    x = 4,194,080,436.90/87,966.70
  6. Step 6: Final answer
    x = 47,678.05

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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.