Home / 54,367.05-81,531.01-18,818.71

Finding the Fourth Proportional to 54,367.05, 81,531.01 and 18,818.71

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Solution

The fourth proportional to 54,367.05, 81,531.01 and 18,818.71 is: 28,221.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,367.05 : 81,531.01 = 18,818.71 : x
  2. Step 2: Convert to fraction form
    54,367.05/81,531.01 = 18,818.71/x
  3. Step 3: Cross multiply
    54,367.05x = 81,531.01 × 18,818.71
  4. Step 4: Simplify right side
    54,367.05x = 1,534,308,433.20
  5. Step 5: Solve for x
    x = 1,534,308,433.20/54,367.05
  6. Step 6: Final answer
    x = 28,221.29

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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.