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Finding the Fourth Proportional to 89,107.78, 122,969.81 and 50,872.54

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Solution

The fourth proportional to 89,107.78, 122,969.81 and 50,872.54 is: 70,204.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,107.78 : 122,969.81 = 50,872.54 : x
  2. Step 2: Convert to fraction form
    89,107.78/122,969.81 = 50,872.54/x
  3. Step 3: Cross multiply
    89,107.78x = 122,969.81 × 50,872.54
  4. Step 4: Simplify right side
    89,107.78x = 6,255,786,578.02
  5. Step 5: Solve for x
    x = 6,255,786,578.02/89,107.78
  6. Step 6: Final answer
    x = 70,204.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.