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Finding the Fourth Proportional to 80,763, 121,149.36 and 25,359

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Solution

The fourth proportional to 80,763, 121,149.36 and 25,359 is: 38,040.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,763 : 121,149.36 = 25,359 : x
  2. Step 2: Convert to fraction form
    80,763/121,149.36 = 25,359/x
  3. Step 3: Cross multiply
    80,763x = 121,149.36 × 25,359
  4. Step 4: Simplify right side
    80,763x = 3,072,226,620.24
  5. Step 5: Solve for x
    x = 3,072,226,620.24/80,763
  6. Step 6: Final answer
    x = 38,040.03

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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.