Home / 54,438.03-81,662.19-21,160.65

Finding the Fourth Proportional to 54,438.03, 81,662.19 and 21,160.65

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Solution

The fourth proportional to 54,438.03, 81,662.19 and 21,160.65 is: 31,742.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,438.03 : 81,662.19 = 21,160.65 : x
  2. Step 2: Convert to fraction form
    54,438.03/81,662.19 = 21,160.65/x
  3. Step 3: Cross multiply
    54,438.03x = 81,662.19 × 21,160.65
  4. Step 4: Simplify right side
    54,438.03x = 1,728,025,020.82
  5. Step 5: Solve for x
    x = 1,728,025,020.82/54,438.03
  6. Step 6: Final answer
    x = 31,742.97

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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.