Home / 71,789.76-108,222.48-66,972.96

Finding the Fourth Proportional to 71,789.76, 108,222.48 and 66,972.96

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Solution

The fourth proportional to 71,789.76, 108,222.48 and 66,972.96 is: 100,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,789.76 : 108,222.48 = 66,972.96 : x
  2. Step 2: Convert to fraction form
    71,789.76/108,222.48 = 66,972.96/x
  3. Step 3: Cross multiply
    71,789.76x = 108,222.48 × 66,972.96
  4. Step 4: Simplify right side
    71,789.76x = 7,247,979,824.14
  5. Step 5: Solve for x
    x = 7,247,979,824.14/71,789.76
  6. Step 6: Final answer
    x = 100,961.19

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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.