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Finding the Fourth Proportional to 68,232.78, 102,362.94 and 28,789.83

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Solution

The fourth proportional to 68,232.78, 102,362.94 and 28,789.83 is: 43,190.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,232.78 : 102,362.94 = 28,789.83 : x
  2. Step 2: Convert to fraction form
    68,232.78/102,362.94 = 28,789.83/x
  3. Step 3: Cross multiply
    68,232.78x = 102,362.94 × 28,789.83
  4. Step 4: Simplify right side
    68,232.78x = 2,947,011,640.90
  5. Step 5: Solve for x
    x = 2,947,011,640.90/68,232.78
  6. Step 6: Final answer
    x = 43,190.56

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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.