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Finding the Fourth Proportional to 67,114.20, 100,556.10 and 43,728.60

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Solution

The fourth proportional to 67,114.20, 100,556.10 and 43,728.60 is: 65,517.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,114.20 : 100,556.10 = 43,728.60 : x
  2. Step 2: Convert to fraction form
    67,114.20/100,556.10 = 43,728.60/x
  3. Step 3: Cross multiply
    67,114.20x = 100,556.10 × 43,728.60
  4. Step 4: Simplify right side
    67,114.20x = 4,397,177,474.46
  5. Step 5: Solve for x
    x = 4,397,177,474.46/67,114.20
  6. Step 6: Final answer
    x = 65,517.84

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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.