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Finding the Fourth Proportional to 172,619.92, 258,943.92 and 47,960.92

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Solution

The fourth proportional to 172,619.92, 258,943.92 and 47,960.92 is: 71,945.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,619.92 : 258,943.92 = 47,960.92 : x
  2. Step 2: Convert to fraction form
    172,619.92/258,943.92 = 47,960.92/x
  3. Step 3: Cross multiply
    172,619.92x = 258,943.92 × 47,960.92
  4. Step 4: Simplify right side
    172,619.92x = 12,419,188,631.61
  5. Step 5: Solve for x
    x = 12,419,188,631.61/172,619.92
  6. Step 6: Final answer
    x = 71,945.28

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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.