Home / 54,187.20-81,294.98-20,908.35

Finding the Fourth Proportional to 54,187.20, 81,294.98 and 20,908.35

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Solution

The fourth proportional to 54,187.20, 81,294.98 and 20,908.35 is: 31,367.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,187.20 : 81,294.98 = 20,908.35 : x
  2. Step 2: Convert to fraction form
    54,187.20/81,294.98 = 20,908.35/x
  3. Step 3: Cross multiply
    54,187.20x = 81,294.98 × 20,908.35
  4. Step 4: Simplify right side
    54,187.20x = 1,699,743,790.54
  5. Step 5: Solve for x
    x = 1,699,743,790.54/54,187.20
  6. Step 6: Final answer
    x = 31,367.99

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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.