Home / 54,143.03-81,228.38-20,854.15

Finding the Fourth Proportional to 54,143.03, 81,228.38 and 20,854.15

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Solution

The fourth proportional to 54,143.03, 81,228.38 and 20,854.15 is: 31,286.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,143.03 : 81,228.38 = 20,854.15 : x
  2. Step 2: Convert to fraction form
    54,143.03/81,228.38 = 20,854.15/x
  3. Step 3: Cross multiply
    54,143.03x = 81,228.38 × 20,854.15
  4. Step 4: Simplify right side
    54,143.03x = 1,693,949,029.00
  5. Step 5: Solve for x
    x = 1,693,949,029.00/54,143.03
  6. Step 6: Final answer
    x = 31,286.56

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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.