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Finding the Fourth Proportional to 80,750, 121,126.08 and 25,346

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Solution

The fourth proportional to 80,750, 121,126.08 and 25,346 is: 38,019.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,750 : 121,126.08 = 25,346 : x
  2. Step 2: Convert to fraction form
    80,750/121,126.08 = 25,346/x
  3. Step 3: Cross multiply
    80,750x = 121,126.08 × 25,346
  4. Step 4: Simplify right side
    80,750x = 3,070,061,623.68
  5. Step 5: Solve for x
    x = 3,070,061,623.68/80,750
  6. Step 6: Final answer
    x = 38,019.34

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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.