Home / 54,039.11-81,003.24-20,750.21

Finding the Fourth Proportional to 54,039.11, 81,003.24 and 20,750.21

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Solution

The fourth proportional to 54,039.11, 81,003.24 and 20,750.21 is: 31,104.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,039.11 : 81,003.24 = 20,750.21 : x
  2. Step 2: Convert to fraction form
    54,039.11/81,003.24 = 20,750.21/x
  3. Step 3: Cross multiply
    54,039.11x = 81,003.24 × 20,750.21
  4. Step 4: Simplify right side
    54,039.11x = 1,680,834,240.68
  5. Step 5: Solve for x
    x = 1,680,834,240.68/54,039.11
  6. Step 6: Final answer
    x = 31,104.03

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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.