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Finding the Fourth Proportional to 29,879.78, 44,819.68 and 12,330.32

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Solution

The fourth proportional to 29,879.78, 44,819.68 and 12,330.32 is: 18,495.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,879.78 : 44,819.68 = 12,330.32 : x
  2. Step 2: Convert to fraction form
    29,879.78/44,819.68 = 12,330.32/x
  3. Step 3: Cross multiply
    29,879.78x = 44,819.68 × 12,330.32
  4. Step 4: Simplify right side
    29,879.78x = 552,640,996.70
  5. Step 5: Solve for x
    x = 552,640,996.70/29,879.78
  6. Step 6: Final answer
    x = 18,495.48

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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.