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Finding the Fourth Proportional to 45,149.01, 67,732.02 and 20,190.12

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Solution

The fourth proportional to 45,149.01, 67,732.02 and 20,190.12 is: 30,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,149.01 : 67,732.02 = 20,190.12 : x
  2. Step 2: Convert to fraction form
    45,149.01/67,732.02 = 20,190.12/x
  3. Step 3: Cross multiply
    45,149.01x = 67,732.02 × 20,190.12
  4. Step 4: Simplify right side
    45,149.01x = 1,367,517,611.64
  5. Step 5: Solve for x
    x = 1,367,517,611.64/45,149.01
  6. Step 6: Final answer
    x = 30,288.98

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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.