Home / 54,039.61-81,003.99-20,750.71

Finding the Fourth Proportional to 54,039.61, 81,003.99 and 20,750.71

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Solution

The fourth proportional to 54,039.61, 81,003.99 and 20,750.71 is: 31,104.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,039.61 : 81,003.99 = 20,750.71 : x
  2. Step 2: Convert to fraction form
    54,039.61/81,003.99 = 20,750.71/x
  3. Step 3: Cross multiply
    54,039.61x = 81,003.99 × 20,750.71
  4. Step 4: Simplify right side
    54,039.61x = 1,680,890,305.33
  5. Step 5: Solve for x
    x = 1,680,890,305.33/54,039.61
  6. Step 6: Final answer
    x = 31,104.78

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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.