Home / 54,045.20-81,132.60-30,371.60

Finding the Fourth Proportional to 54,045.20, 81,132.60 and 30,371.60

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Solution

The fourth proportional to 54,045.20, 81,132.60 and 30,371.60 is: 45,593.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,045.20 : 81,132.60 = 30,371.60 : x
  2. Step 2: Convert to fraction form
    54,045.20/81,132.60 = 30,371.60/x
  3. Step 3: Cross multiply
    54,045.20x = 81,132.60 × 30,371.60
  4. Step 4: Simplify right side
    54,045.20x = 2,464,126,874.16
  5. Step 5: Solve for x
    x = 2,464,126,874.16/54,045.20
  6. Step 6: Final answer
    x = 45,593.82

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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.