Home / 54,531.64-81,841.21-28,243.90

Finding the Fourth Proportional to 54,531.64, 81,841.21 and 28,243.90

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Solution

The fourth proportional to 54,531.64, 81,841.21 and 28,243.90 is: 42,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,531.64 : 81,841.21 = 28,243.90 : x
  2. Step 2: Convert to fraction form
    54,531.64/81,841.21 = 28,243.90/x
  3. Step 3: Cross multiply
    54,531.64x = 81,841.21 × 28,243.90
  4. Step 4: Simplify right side
    54,531.64x = 2,311,514,982.81
  5. Step 5: Solve for x
    x = 2,311,514,982.81/54,531.64
  6. Step 6: Final answer
    x = 42,388.51

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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.