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Finding the Fourth Proportional to 67,150.52, 100,728.02 and 20,403.24

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Solution

The fourth proportional to 67,150.52, 100,728.02 and 20,403.24 is: 30,605.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,150.52 : 100,728.02 = 20,403.24 : x
  2. Step 2: Convert to fraction form
    67,150.52/100,728.02 = 20,403.24/x
  3. Step 3: Cross multiply
    67,150.52x = 100,728.02 × 20,403.24
  4. Step 4: Simplify right side
    67,150.52x = 2,055,177,966.78
  5. Step 5: Solve for x
    x = 2,055,177,966.78/67,150.52
  6. Step 6: Final answer
    x = 30,605.54

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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.