Home / 80,489.97-120,734.95-27,899.45

Finding the Fourth Proportional to 80,489.97, 120,734.95 and 27,899.45

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Solution

The fourth proportional to 80,489.97, 120,734.95 and 27,899.45 is: 41,849.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,489.97 : 120,734.95 = 27,899.45 : x
  2. Step 2: Convert to fraction form
    80,489.97/120,734.95 = 27,899.45/x
  3. Step 3: Cross multiply
    80,489.97x = 120,734.95 × 27,899.45
  4. Step 4: Simplify right side
    80,489.97x = 3,368,438,561.28
  5. Step 5: Solve for x
    x = 3,368,438,561.28/80,489.97
  6. Step 6: Final answer
    x = 41,849.17

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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.