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Finding the Fourth Proportional to 80,215.37, 110,696.78 and 43,920.11

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Solution

The fourth proportional to 80,215.37, 110,696.78 and 43,920.11 is: 60,609.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,215.37 : 110,696.78 = 43,920.11 : x
  2. Step 2: Convert to fraction form
    80,215.37/110,696.78 = 43,920.11/x
  3. Step 3: Cross multiply
    80,215.37x = 110,696.78 × 43,920.11
  4. Step 4: Simplify right side
    80,215.37x = 4,861,813,981.16
  5. Step 5: Solve for x
    x = 4,861,813,981.16/80,215.37
  6. Step 6: Final answer
    x = 60,609.51

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1.5x scale

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.