Home / 54,040.11-81,004.74-20,751.21

Finding the Fourth Proportional to 54,040.11, 81,004.74 and 20,751.21

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Solution

The fourth proportional to 54,040.11, 81,004.74 and 20,751.21 is: 31,105.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,040.11 : 81,004.74 = 20,751.21 : x
  2. Step 2: Convert to fraction form
    54,040.11/81,004.74 = 20,751.21/x
  3. Step 3: Cross multiply
    54,040.11x = 81,004.74 × 20,751.21
  4. Step 4: Simplify right side
    54,040.11x = 1,680,946,370.74
  5. Step 5: Solve for x
    x = 1,680,946,370.74/54,040.11
  6. Step 6: Final answer
    x = 31,105.53

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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.