Home / 80,487.12-111,112.20-50,289.18

Finding the Fourth Proportional to 80,487.12, 111,112.20 and 50,289.18

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Solution

The fourth proportional to 80,487.12, 111,112.20 and 50,289.18 is: 69,424.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,487.12 : 111,112.20 = 50,289.18 : x
  2. Step 2: Convert to fraction form
    80,487.12/111,112.20 = 50,289.18/x
  3. Step 3: Cross multiply
    80,487.12x = 111,112.20 × 50,289.18
  4. Step 4: Simplify right side
    80,487.12x = 5,587,741,426.00
  5. Step 5: Solve for x
    x = 5,587,741,426.00/80,487.12
  6. Step 6: Final answer
    x = 69,424.04

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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.