Home / 90,691.32-125,144.50-50,398.57

Finding the Fourth Proportional to 90,691.32, 125,144.50 and 50,398.57

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Solution

The fourth proportional to 90,691.32, 125,144.50 and 50,398.57 is: 69,544.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,691.32 : 125,144.50 = 50,398.57 : x
  2. Step 2: Convert to fraction form
    90,691.32/125,144.50 = 50,398.57/x
  3. Step 3: Cross multiply
    90,691.32x = 125,144.50 × 50,398.57
  4. Step 4: Simplify right side
    90,691.32x = 6,307,103,843.37
  5. Step 5: Solve for x
    x = 6,307,103,843.37/90,691.32
  6. Step 6: Final answer
    x = 69,544.74

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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.