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Finding the Fourth Proportional to 61,441.20, 84,815.02 and 41,309.78

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Solution

The fourth proportional to 61,441.20, 84,815.02 and 41,309.78 is: 57,025.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,441.20 : 84,815.02 = 41,309.78 : x
  2. Step 2: Convert to fraction form
    61,441.20/84,815.02 = 41,309.78/x
  3. Step 3: Cross multiply
    61,441.20x = 84,815.02 × 41,309.78
  4. Step 4: Simplify right side
    61,441.20x = 3,503,689,816.90
  5. Step 5: Solve for x
    x = 3,503,689,816.90/61,441.20
  6. Step 6: Final answer
    x = 57,025.09

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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.