Home / 54,189.20-81,125.40-38,637.20

Finding the Fourth Proportional to 54,189.20, 81,125.40 and 38,637.20

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Solution

The fourth proportional to 54,189.20, 81,125.40 and 38,637.20 is: 57,842.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,189.20 : 81,125.40 = 38,637.20 : x
  2. Step 2: Convert to fraction form
    54,189.20/81,125.40 = 38,637.20/x
  3. Step 3: Cross multiply
    54,189.20x = 81,125.40 × 38,637.20
  4. Step 4: Simplify right side
    54,189.20x = 3,134,458,304.88
  5. Step 5: Solve for x
    x = 3,134,458,304.88/54,189.20
  6. Step 6: Final answer
    x = 57,842.86

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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.