Home / 54,981.11-82,479.77-19,912.57

Finding the Fourth Proportional to 54,981.11, 82,479.77 and 19,912.57

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Solution

The fourth proportional to 54,981.11, 82,479.77 and 19,912.57 is: 29,871.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,981.11 : 82,479.77 = 19,912.57 : x
  2. Step 2: Convert to fraction form
    54,981.11/82,479.77 = 19,912.57/x
  3. Step 3: Cross multiply
    54,981.11x = 82,479.77 × 19,912.57
  4. Step 4: Simplify right side
    54,981.11x = 1,642,383,681.75
  5. Step 5: Solve for x
    x = 1,642,383,681.75/54,981.11
  6. Step 6: Final answer
    x = 29,871.78

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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.