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Finding the Fourth Proportional to 82,976.20, 124,912.75 and 75,627.88

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Solution

The fourth proportional to 82,976.20, 124,912.75 and 75,627.88 is: 113,850.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,976.20 : 124,912.75 = 75,627.88 : x
  2. Step 2: Convert to fraction form
    82,976.20/124,912.75 = 75,627.88/x
  3. Step 3: Cross multiply
    82,976.20x = 124,912.75 × 75,627.88
  4. Step 4: Simplify right side
    82,976.20x = 9,446,886,467.47
  5. Step 5: Solve for x
    x = 9,446,886,467.47/82,976.20
  6. Step 6: Final answer
    x = 113,850.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.