Home / 54,209.85-81,294.54-18,661.23

Finding the Fourth Proportional to 54,209.85, 81,294.54 and 18,661.23

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Solution

The fourth proportional to 54,209.85, 81,294.54 and 18,661.23 is: 27,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,209.85 : 81,294.54 = 18,661.23 : x
  2. Step 2: Convert to fraction form
    54,209.85/81,294.54 = 18,661.23/x
  3. Step 3: Cross multiply
    54,209.85x = 81,294.54 × 18,661.23
  4. Step 4: Simplify right side
    54,209.85x = 1,517,056,108.68
  5. Step 5: Solve for x
    x = 1,517,056,108.68/54,209.85
  6. Step 6: Final answer
    x = 27,984.88

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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.