Home / 80,856.49-121,280.62-30,932.75

Finding the Fourth Proportional to 80,856.49, 121,280.62 and 30,932.75

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Solution

The fourth proportional to 80,856.49, 121,280.62 and 30,932.75 is: 46,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,856.49 : 121,280.62 = 30,932.75 : x
  2. Step 2: Convert to fraction form
    80,856.49/121,280.62 = 30,932.75/x
  3. Step 3: Cross multiply
    80,856.49x = 121,280.62 × 30,932.75
  4. Step 4: Simplify right side
    80,856.49x = 3,751,543,098.31
  5. Step 5: Solve for x
    x = 3,751,543,098.31/80,856.49
  6. Step 6: Final answer
    x = 46,397.55

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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.