Home / 81,764.85-112,836.51-49,499.04

Finding the Fourth Proportional to 81,764.85, 112,836.51 and 49,499.04

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Solution

The fourth proportional to 81,764.85, 112,836.51 and 49,499.04 is: 68,309.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,764.85 : 112,836.51 = 49,499.04 : x
  2. Step 2: Convert to fraction form
    81,764.85/112,836.51 = 49,499.04/x
  3. Step 3: Cross multiply
    81,764.85x = 112,836.51 × 49,499.04
  4. Step 4: Simplify right side
    81,764.85x = 5,585,298,921.95
  5. Step 5: Solve for x
    x = 5,585,298,921.95/81,764.85
  6. Step 6: Final answer
    x = 68,309.29

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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.