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Finding the Fourth Proportional to 80,672.68, 121,020.54 and 25,273

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Solution

The fourth proportional to 80,672.68, 121,020.54 and 25,273 is: 37,913.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.68 : 121,020.54 = 25,273 : x
  2. Step 2: Convert to fraction form
    80,672.68/121,020.54 = 25,273/x
  3. Step 3: Cross multiply
    80,672.68x = 121,020.54 × 25,273
  4. Step 4: Simplify right side
    80,672.68x = 3,058,552,107.42
  5. Step 5: Solve for x
    x = 3,058,552,107.42/80,672.68
  6. Step 6: Final answer
    x = 37,913.11

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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.