Home / 80,761.13-121,146.55-25,357.13

Finding the Fourth Proportional to 80,761.13, 121,146.55 and 25,357.13

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Solution

The fourth proportional to 80,761.13, 121,146.55 and 25,357.13 is: 38,037.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,761.13 : 121,146.55 = 25,357.13 : x
  2. Step 2: Convert to fraction form
    80,761.13/121,146.55 = 25,357.13/x
  3. Step 3: Cross multiply
    80,761.13x = 121,146.55 × 25,357.13
  4. Step 4: Simplify right side
    80,761.13x = 3,071,928,211.67
  5. Step 5: Solve for x
    x = 3,071,928,211.67/80,761.13
  6. Step 6: Final answer
    x = 38,037.21

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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.