Home / 54,262.44-81,406.08-20,982.78

Finding the Fourth Proportional to 54,262.44, 81,406.08 and 20,982.78

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Solution

The fourth proportional to 54,262.44, 81,406.08 and 20,982.78 is: 31,478.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,262.44 : 81,406.08 = 20,982.78 : x
  2. Step 2: Convert to fraction form
    54,262.44/81,406.08 = 20,982.78/x
  3. Step 3: Cross multiply
    54,262.44x = 81,406.08 × 20,982.78
  4. Step 4: Simplify right side
    54,262.44x = 1,708,125,867.30
  5. Step 5: Solve for x
    x = 1,708,125,867.30/54,262.44
  6. Step 6: Final answer
    x = 31,478.97

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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.