Home / 83,680.83-115,346.84-82,021.95

Finding the Fourth Proportional to 83,680.83, 115,346.84 and 82,021.95

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Solution

The fourth proportional to 83,680.83, 115,346.84 and 82,021.95 is: 113,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,680.83 : 115,346.84 = 82,021.95 : x
  2. Step 2: Convert to fraction form
    83,680.83/115,346.84 = 82,021.95/x
  3. Step 3: Cross multiply
    83,680.83x = 115,346.84 × 82,021.95
  4. Step 4: Simplify right side
    83,680.83x = 9,460,972,333.03
  5. Step 5: Solve for x
    x = 9,460,972,333.03/83,680.83
  6. Step 6: Final answer
    x = 113,060.21

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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.