Home / 87,479.02-131,046.78-45,386.56

Finding the Fourth Proportional to 87,479.02, 131,046.78 and 45,386.56

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Solution

The fourth proportional to 87,479.02, 131,046.78 and 45,386.56 is: 67,990.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,479.02 : 131,046.78 = 45,386.56 : x
  2. Step 2: Convert to fraction form
    87,479.02/131,046.78 = 45,386.56/x
  3. Step 3: Cross multiply
    87,479.02x = 131,046.78 × 45,386.56
  4. Step 4: Simplify right side
    87,479.02x = 5,947,762,543.28
  5. Step 5: Solve for x
    x = 5,947,762,543.28/87,479.02
  6. Step 6: Final answer
    x = 67,990.73

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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.