Home / 83,905.10-125,566.05-76,906.70

Finding the Fourth Proportional to 83,905.10, 125,566.05 and 76,906.70

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Solution

The fourth proportional to 83,905.10, 125,566.05 and 76,906.70 is: 115,092.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,905.10 : 125,566.05 = 76,906.70 : x
  2. Step 2: Convert to fraction form
    83,905.10/125,566.05 = 76,906.70/x
  3. Step 3: Cross multiply
    83,905.10x = 125,566.05 × 76,906.70
  4. Step 4: Simplify right side
    83,905.10x = 9,656,870,537.54
  5. Step 5: Solve for x
    x = 9,656,870,537.54/83,905.10
  6. Step 6: Final answer
    x = 115,092.77

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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.