Home / 54,148.20-81,236.15-20,859.33

Finding the Fourth Proportional to 54,148.20, 81,236.15 and 20,859.33

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Solution

The fourth proportional to 54,148.20, 81,236.15 and 20,859.33 is: 31,294.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,148.20 : 81,236.15 = 20,859.33 : x
  2. Step 2: Convert to fraction form
    54,148.20/81,236.15 = 20,859.33/x
  3. Step 3: Cross multiply
    54,148.20x = 81,236.15 × 20,859.33
  4. Step 4: Simplify right side
    54,148.20x = 1,694,531,660.78
  5. Step 5: Solve for x
    x = 1,694,531,660.78/54,148.20
  6. Step 6: Final answer
    x = 31,294.33

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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.