Home / 83,354.62-115,083.03-74,386.72

Finding the Fourth Proportional to 83,354.62, 115,083.03 and 74,386.72

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Solution

The fourth proportional to 83,354.62, 115,083.03 and 74,386.72 is: 102,701.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,354.62 : 115,083.03 = 74,386.72 : x
  2. Step 2: Convert to fraction form
    83,354.62/115,083.03 = 74,386.72/x
  3. Step 3: Cross multiply
    83,354.62x = 115,083.03 × 74,386.72
  4. Step 4: Simplify right side
    83,354.62x = 8,560,649,129.36
  5. Step 5: Solve for x
    x = 8,560,649,129.36/83,354.62
  6. Step 6: Final answer
    x = 102,701.56

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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.