Home / 90,591.15-124,995.63-54,780.39

Finding the Fourth Proportional to 90,591.15, 124,995.63 and 54,780.39

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Solution

The fourth proportional to 90,591.15, 124,995.63 and 54,780.39 is: 75,584.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,591.15 : 124,995.63 = 54,780.39 : x
  2. Step 2: Convert to fraction form
    90,591.15/124,995.63 = 54,780.39/x
  3. Step 3: Cross multiply
    90,591.15x = 124,995.63 × 54,780.39
  4. Step 4: Simplify right side
    90,591.15x = 6,847,309,359.70
  5. Step 5: Solve for x
    x = 6,847,309,359.70/90,591.15
  6. Step 6: Final answer
    x = 75,584.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.