Home / 54,207.30-81,290.71-18,658.56

Finding the Fourth Proportional to 54,207.30, 81,290.71 and 18,658.56

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Solution

The fourth proportional to 54,207.30, 81,290.71 and 18,658.56 is: 27,980.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,207.30 : 81,290.71 = 18,658.56 : x
  2. Step 2: Convert to fraction form
    54,207.30/81,290.71 = 18,658.56/x
  3. Step 3: Cross multiply
    54,207.30x = 81,290.71 × 18,658.56
  4. Step 4: Simplify right side
    54,207.30x = 1,516,767,589.98
  5. Step 5: Solve for x
    x = 1,516,767,589.98/54,207.30
  6. Step 6: Final answer
    x = 27,980.87

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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.