Home / 81,249.26-121,618.46-55,799.76

Finding the Fourth Proportional to 81,249.26, 121,618.46 and 55,799.76

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Solution

The fourth proportional to 81,249.26, 121,618.46 and 55,799.76 is: 83,524.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,249.26 : 121,618.46 = 55,799.76 : x
  2. Step 2: Convert to fraction form
    81,249.26/121,618.46 = 55,799.76/x
  3. Step 3: Cross multiply
    81,249.26x = 121,618.46 × 55,799.76
  4. Step 4: Simplify right side
    81,249.26x = 6,786,280,581.79
  5. Step 5: Solve for x
    x = 6,786,280,581.79/81,249.26
  6. Step 6: Final answer
    x = 83,524.21

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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.