Home / 81,016.20-111,799.44-50,817.78

Finding the Fourth Proportional to 81,016.20, 111,799.44 and 50,817.78

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Solution

The fourth proportional to 81,016.20, 111,799.44 and 50,817.78 is: 70,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,016.20 : 111,799.44 = 50,817.78 : x
  2. Step 2: Convert to fraction form
    81,016.20/111,799.44 = 50,817.78/x
  3. Step 3: Cross multiply
    81,016.20x = 111,799.44 × 50,817.78
  4. Step 4: Simplify right side
    81,016.20x = 5,681,399,346.04
  5. Step 5: Solve for x
    x = 5,681,399,346.04/81,016.20
  6. Step 6: Final answer
    x = 70,126.71

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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.