Home / 54,471.26-81,688.52-20,729.27

Finding the Fourth Proportional to 54,471.26, 81,688.52 and 20,729.27

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Solution

The fourth proportional to 54,471.26, 81,688.52 and 20,729.27 is: 31,086.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,471.26 : 81,688.52 = 20,729.27 : x
  2. Step 2: Convert to fraction form
    54,471.26/81,688.52 = 20,729.27/x
  3. Step 3: Cross multiply
    54,471.26x = 81,688.52 × 20,729.27
  4. Step 4: Simplify right side
    54,471.26x = 1,693,342,874.89
  5. Step 5: Solve for x
    x = 1,693,342,874.89/54,471.26
  6. Step 6: Final answer
    x = 31,086.91

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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.