Home / 85,144.60-117,489.30-49,329.64

Finding the Fourth Proportional to 85,144.60, 117,489.30 and 49,329.64

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Solution

The fourth proportional to 85,144.60, 117,489.30 and 49,329.64 is: 68,068.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,144.60 : 117,489.30 = 49,329.64 : x
  2. Step 2: Convert to fraction form
    85,144.60/117,489.30 = 49,329.64/x
  3. Step 3: Cross multiply
    85,144.60x = 117,489.30 × 49,329.64
  4. Step 4: Simplify right side
    85,144.60x = 5,795,704,872.85
  5. Step 5: Solve for x
    x = 5,795,704,872.85/85,144.60
  6. Step 6: Final answer
    x = 68,068.97

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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.