Home / 85,441.22-117,908.49-47,200.78

Finding the Fourth Proportional to 85,441.22, 117,908.49 and 47,200.78

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Solution

The fourth proportional to 85,441.22, 117,908.49 and 47,200.78 is: 65,136.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,441.22 : 117,908.49 = 47,200.78 : x
  2. Step 2: Convert to fraction form
    85,441.22/117,908.49 = 47,200.78/x
  3. Step 3: Cross multiply
    85,441.22x = 117,908.49 × 47,200.78
  4. Step 4: Simplify right side
    85,441.22x = 5,565,372,107.08
  5. Step 5: Solve for x
    x = 5,565,372,107.08/85,441.22
  6. Step 6: Final answer
    x = 65,136.86

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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.