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Finding the Fourth Proportional to 45,163.42, 67,745.12 and 18,853.81

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Solution

The fourth proportional to 45,163.42, 67,745.12 and 18,853.81 is: 28,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,163.42 : 67,745.12 = 18,853.81 : x
  2. Step 2: Convert to fraction form
    45,163.42/67,745.12 = 18,853.81/x
  3. Step 3: Cross multiply
    45,163.42x = 67,745.12 × 18,853.81
  4. Step 4: Simplify right side
    45,163.42x = 1,277,253,498.68
  5. Step 5: Solve for x
    x = 1,277,253,498.68/45,163.42
  6. Step 6: Final answer
    x = 28,280.71

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Similar ratio
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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.