Home / 54,251.94-81,352.38-20,987.66

Finding the Fourth Proportional to 54,251.94, 81,352.38 and 20,987.66

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Solution

The fourth proportional to 54,251.94, 81,352.38 and 20,987.66 is: 31,471.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,251.94 : 81,352.38 = 20,987.66 : x
  2. Step 2: Convert to fraction form
    54,251.94/81,352.38 = 20,987.66/x
  3. Step 3: Cross multiply
    54,251.94x = 81,352.38 × 20,987.66
  4. Step 4: Simplify right side
    54,251.94x = 1,707,396,091.63
  5. Step 5: Solve for x
    x = 1,707,396,091.63/54,251.94
  6. Step 6: Final answer
    x = 31,471.61

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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.