Home / 80,713.38-111,439.32-50,510.90

Finding the Fourth Proportional to 80,713.38, 111,439.32 and 50,510.90

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Solution

The fourth proportional to 80,713.38, 111,439.32 and 50,510.90 is: 69,739.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,713.38 : 111,439.32 = 50,510.90 : x
  2. Step 2: Convert to fraction form
    80,713.38/111,439.32 = 50,510.90/x
  3. Step 3: Cross multiply
    80,713.38x = 111,439.32 × 50,510.90
  4. Step 4: Simplify right side
    80,713.38x = 5,628,900,348.59
  5. Step 5: Solve for x
    x = 5,628,900,348.59/80,713.38
  6. Step 6: Final answer
    x = 69,739.37

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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.