Home / 54,143.56-81,229.18-20,854.69

Finding the Fourth Proportional to 54,143.56, 81,229.18 and 20,854.69

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Solution

The fourth proportional to 54,143.56, 81,229.18 and 20,854.69 is: 31,287.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,143.56 : 81,229.18 = 20,854.69 : x
  2. Step 2: Convert to fraction form
    54,143.56/81,229.18 = 20,854.69/x
  3. Step 3: Cross multiply
    54,143.56x = 81,229.18 × 20,854.69
  4. Step 4: Simplify right side
    54,143.56x = 1,694,009,229.95
  5. Step 5: Solve for x
    x = 1,694,009,229.95/54,143.56
  6. Step 6: Final answer
    x = 31,287.36

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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.