Home / 54,402.65-81,587.56-21,115.29

Finding the Fourth Proportional to 54,402.65, 81,587.56 and 21,115.29

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Solution

The fourth proportional to 54,402.65, 81,587.56 and 21,115.29 is: 31,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,402.65 : 81,587.56 = 21,115.29 : x
  2. Step 2: Convert to fraction form
    54,402.65/81,587.56 = 21,115.29/x
  3. Step 3: Cross multiply
    54,402.65x = 81,587.56 × 21,115.29
  4. Step 4: Simplify right side
    54,402.65x = 1,722,744,989.79
  5. Step 5: Solve for x
    x = 1,722,744,989.79/54,402.65
  6. Step 6: Final answer
    x = 31,666.56

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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.