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Finding the Fourth Proportional to 45,229.80, 67,844.70 and 40,218.60

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Solution

The fourth proportional to 45,229.80, 67,844.70 and 40,218.60 is: 60,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,229.80 : 67,844.70 = 40,218.60 : x
  2. Step 2: Convert to fraction form
    45,229.80/67,844.70 = 40,218.60/x
  3. Step 3: Cross multiply
    45,229.80x = 67,844.70 × 40,218.60
  4. Step 4: Simplify right side
    45,229.80x = 2,728,618,851.42
  5. Step 5: Solve for x
    x = 2,728,618,851.42/45,229.80
  6. Step 6: Final answer
    x = 60,327.90

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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.