Home / 72,976.68-109,251.72-65,972.79

Finding the Fourth Proportional to 72,976.68, 109,251.72 and 65,972.79

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Solution

The fourth proportional to 72,976.68, 109,251.72 and 65,972.79 is: 98,766.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,976.68 : 109,251.72 = 65,972.79 : x
  2. Step 2: Convert to fraction form
    72,976.68/109,251.72 = 65,972.79/x
  3. Step 3: Cross multiply
    72,976.68x = 109,251.72 × 65,972.79
  4. Step 4: Simplify right side
    72,976.68x = 7,207,640,780.70
  5. Step 5: Solve for x
    x = 7,207,640,780.70/72,976.68
  6. Step 6: Final answer
    x = 98,766.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.