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Finding the Fourth Proportional to 80,880, 121,324.32 and 25,480.32

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Solution

The fourth proportional to 80,880, 121,324.32 and 25,480.32 is: 38,221.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,880 : 121,324.32 = 25,480.32 : x
  2. Step 2: Convert to fraction form
    80,880/121,324.32 = 25,480.32/x
  3. Step 3: Cross multiply
    80,880x = 121,324.32 × 25,480.32
  4. Step 4: Simplify right side
    80,880x = 3,091,382,497.38
  5. Step 5: Solve for x
    x = 3,091,382,497.38/80,880
  6. Step 6: Final answer
    x = 38,221.84

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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.