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Finding the Fourth Proportional to 80,765.97, 121,153.02 and 30,850.39

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Solution

The fourth proportional to 80,765.97, 121,153.02 and 30,850.39 is: 46,277.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,765.97 : 121,153.02 = 30,850.39 : x
  2. Step 2: Convert to fraction form
    80,765.97/121,153.02 = 30,850.39/x
  3. Step 3: Cross multiply
    80,765.97x = 121,153.02 × 30,850.39
  4. Step 4: Simplify right side
    80,765.97x = 3,737,617,916.68
  5. Step 5: Solve for x
    x = 3,737,617,916.68/80,765.97
  6. Step 6: Final answer
    x = 46,277.14

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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.