Home / 85,311.75-117,736.86-47,078.85

Finding the Fourth Proportional to 85,311.75, 117,736.86 and 47,078.85

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Solution

The fourth proportional to 85,311.75, 117,736.86 and 47,078.85 is: 64,972.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,311.75 : 117,736.86 = 47,078.85 : x
  2. Step 2: Convert to fraction form
    85,311.75/117,736.86 = 47,078.85/x
  3. Step 3: Cross multiply
    85,311.75x = 117,736.86 × 47,078.85
  4. Step 4: Simplify right side
    85,311.75x = 5,542,915,971.41
  5. Step 5: Solve for x
    x = 5,542,915,971.41/85,311.75
  6. Step 6: Final answer
    x = 64,972.48

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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.