Home / 67,197.28-100,766.80-20,439.36

Finding the Fourth Proportional to 67,197.28, 100,766.80 and 20,439.36

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Solution

The fourth proportional to 67,197.28, 100,766.80 and 20,439.36 is: 30,650.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,197.28 : 100,766.80 = 20,439.36 : x
  2. Step 2: Convert to fraction form
    67,197.28/100,766.80 = 20,439.36/x
  3. Step 3: Cross multiply
    67,197.28x = 100,766.80 × 20,439.36
  4. Step 4: Simplify right side
    67,197.28x = 2,059,608,901.25
  5. Step 5: Solve for x
    x = 2,059,608,901.25/67,197.28
  6. Step 6: Final answer
    x = 30,650.18

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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.