Home / 45,318.72-67,966.20-20,344.80

Finding the Fourth Proportional to 45,318.72, 67,966.20 and 20,344.80

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Solution

The fourth proportional to 45,318.72, 67,966.20 and 20,344.80 is: 30,511.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,318.72 : 67,966.20 = 20,344.80 : x
  2. Step 2: Convert to fraction form
    45,318.72/67,966.20 = 20,344.80/x
  3. Step 3: Cross multiply
    45,318.72x = 67,966.20 × 20,344.80
  4. Step 4: Simplify right side
    45,318.72x = 1,382,758,745.76
  5. Step 5: Solve for x
    x = 1,382,758,745.76/45,318.72
  6. Step 6: Final answer
    x = 30,511.87

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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.