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Finding the Fourth Proportional to 68,604.96, 102,814.32 and 29,112.56

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Solution

The fourth proportional to 68,604.96, 102,814.32 and 29,112.56 is: 43,629.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,604.96 : 102,814.32 = 29,112.56 : x
  2. Step 2: Convert to fraction form
    68,604.96/102,814.32 = 29,112.56/x
  3. Step 3: Cross multiply
    68,604.96x = 102,814.32 × 29,112.56
  4. Step 4: Simplify right side
    68,604.96x = 2,993,188,059.86
  5. Step 5: Solve for x
    x = 2,993,188,059.86/68,604.96
  6. Step 6: Final answer
    x = 43,629.32

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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.