Home / 54,309.52-81,508.29-28,021.78

Finding the Fourth Proportional to 54,309.52, 81,508.29 and 28,021.78

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Solution

The fourth proportional to 54,309.52, 81,508.29 and 28,021.78 is: 42,055.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,309.52 : 81,508.29 = 28,021.78 : x
  2. Step 2: Convert to fraction form
    54,309.52/81,508.29 = 28,021.78/x
  3. Step 3: Cross multiply
    54,309.52x = 81,508.29 × 28,021.78
  4. Step 4: Simplify right side
    54,309.52x = 2,284,007,370.56
  5. Step 5: Solve for x
    x = 2,284,007,370.56/54,309.52
  6. Step 6: Final answer
    x = 42,055.38

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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.