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Finding the Fourth Proportional to 34,640.60, 51,976.20 and 16,861.40

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Solution

The fourth proportional to 34,640.60, 51,976.20 and 16,861.40 is: 25,299.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,640.60 : 51,976.20 = 16,861.40 : x
  2. Step 2: Convert to fraction form
    34,640.60/51,976.20 = 16,861.40/x
  3. Step 3: Cross multiply
    34,640.60x = 51,976.20 × 16,861.40
  4. Step 4: Simplify right side
    34,640.60x = 876,391,498.68
  5. Step 5: Solve for x
    x = 876,391,498.68/34,640.60
  6. Step 6: Final answer
    x = 25,299.55

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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.