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Finding the Fourth Proportional to 85,348.82, 117,795.75 and 49,568.78

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Solution

The fourth proportional to 85,348.82, 117,795.75 and 49,568.78 is: 68,413.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,348.82 : 117,795.75 = 49,568.78 : x
  2. Step 2: Convert to fraction form
    85,348.82/117,795.75 = 49,568.78/x
  3. Step 3: Cross multiply
    85,348.82x = 117,795.75 × 49,568.78
  4. Step 4: Simplify right side
    85,348.82x = 5,838,991,616.69
  5. Step 5: Solve for x
    x = 5,838,991,616.69/85,348.82
  6. Step 6: Final answer
    x = 68,413.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.