Home / 54,241.20-81,203.40-38,689.20

Finding the Fourth Proportional to 54,241.20, 81,203.40 and 38,689.20

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Solution

The fourth proportional to 54,241.20, 81,203.40 and 38,689.20 is: 57,920.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,241.20 : 81,203.40 = 38,689.20 : x
  2. Step 2: Convert to fraction form
    54,241.20/81,203.40 = 38,689.20/x
  3. Step 3: Cross multiply
    54,241.20x = 81,203.40 × 38,689.20
  4. Step 4: Simplify right side
    54,241.20x = 3,141,694,583.28
  5. Step 5: Solve for x
    x = 3,141,694,583.28/54,241.20
  6. Step 6: Final answer
    x = 57,920.82

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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.