Home / 78,515.33-108,304.99-49,397.38

Finding the Fourth Proportional to 78,515.33, 108,304.99 and 49,397.38

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Solution

The fourth proportional to 78,515.33, 108,304.99 and 49,397.38 is: 68,139.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,515.33 : 108,304.99 = 49,397.38 : x
  2. Step 2: Convert to fraction form
    78,515.33/108,304.99 = 49,397.38/x
  3. Step 3: Cross multiply
    78,515.33x = 108,304.99 × 49,397.38
  4. Step 4: Simplify right side
    78,515.33x = 5,349,982,352.67
  5. Step 5: Solve for x
    x = 5,349,982,352.67/78,515.33
  6. Step 6: Final answer
    x = 68,139.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.