Home / 54,324.75-81,440.03-21,021.90

Finding the Fourth Proportional to 54,324.75, 81,440.03 and 21,021.90

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Solution

The fourth proportional to 54,324.75, 81,440.03 and 21,021.90 is: 31,514.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,324.75 : 81,440.03 = 21,021.90 : x
  2. Step 2: Convert to fraction form
    54,324.75/81,440.03 = 21,021.90/x
  3. Step 3: Cross multiply
    54,324.75x = 81,440.03 × 21,021.90
  4. Step 4: Simplify right side
    54,324.75x = 1,712,024,061.55
  5. Step 5: Solve for x
    x = 1,712,024,061.55/54,324.75
  6. Step 6: Final answer
    x = 31,514.62

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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.