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Finding the Fourth Proportional to 85,241.97, 117,640.32 and 49,431.67

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Solution

The fourth proportional to 85,241.97, 117,640.32 and 49,431.67 is: 68,219.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,241.97 : 117,640.32 = 49,431.67 : x
  2. Step 2: Convert to fraction form
    85,241.97/117,640.32 = 49,431.67/x
  3. Step 3: Cross multiply
    85,241.97x = 117,640.32 × 49,431.67
  4. Step 4: Simplify right side
    85,241.97x = 5,815,157,414.54
  5. Step 5: Solve for x
    x = 5,815,157,414.54/85,241.97
  6. Step 6: Final answer
    x = 68,219.42

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1.5x scale

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.