Home / 78,640.20-108,560.25-50,362.02

Finding the Fourth Proportional to 78,640.20, 108,560.25 and 50,362.02

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Solution

The fourth proportional to 78,640.20, 108,560.25 and 50,362.02 is: 69,523.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,640.20 : 108,560.25 = 50,362.02 : x
  2. Step 2: Convert to fraction form
    78,640.20/108,560.25 = 50,362.02/x
  3. Step 3: Cross multiply
    78,640.20x = 108,560.25 × 50,362.02
  4. Step 4: Simplify right side
    78,640.20x = 5,467,313,481.71
  5. Step 5: Solve for x
    x = 5,467,313,481.71/78,640.20
  6. Step 6: Final answer
    x = 69,523.14

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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.