Home / 81,680.46-112,729.23-49,850.70

Finding the Fourth Proportional to 81,680.46, 112,729.23 and 49,850.70

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Solution

The fourth proportional to 81,680.46, 112,729.23 and 49,850.70 is: 68,800.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,680.46 : 112,729.23 = 49,850.70 : x
  2. Step 2: Convert to fraction form
    81,680.46/112,729.23 = 49,850.70/x
  3. Step 3: Cross multiply
    81,680.46x = 112,729.23 × 49,850.70
  4. Step 4: Simplify right side
    81,680.46x = 5,619,631,025.96
  5. Step 5: Solve for x
    x = 5,619,631,025.96/81,680.46
  6. Step 6: Final answer
    x = 68,800.19

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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.