Home / 80,819.06-111,441.11-55,329.57

Finding the Fourth Proportional to 80,819.06, 111,441.11 and 55,329.57

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Solution

The fourth proportional to 80,819.06, 111,441.11 and 55,329.57 is: 76,293.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,819.06 : 111,441.11 = 55,329.57 : x
  2. Step 2: Convert to fraction form
    80,819.06/111,441.11 = 55,329.57/x
  3. Step 3: Cross multiply
    80,819.06x = 111,441.11 × 55,329.57
  4. Step 4: Simplify right side
    80,819.06x = 6,165,988,419.97
  5. Step 5: Solve for x
    x = 6,165,988,419.97/80,819.06
  6. Step 6: Final answer
    x = 76,293.75

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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.