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Finding the Fourth Proportional to 85,462.80, 117,939.18 and 49,653.54

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Solution

The fourth proportional to 85,462.80, 117,939.18 and 49,653.54 is: 68,522.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,462.80 : 117,939.18 = 49,653.54 : x
  2. Step 2: Convert to fraction form
    85,462.80/117,939.18 = 49,653.54/x
  3. Step 3: Cross multiply
    85,462.80x = 117,939.18 × 49,653.54
  4. Step 4: Simplify right side
    85,462.80x = 5,856,097,791.70
  5. Step 5: Solve for x
    x = 5,856,097,791.70/85,462.80
  6. Step 6: Final answer
    x = 68,522.18

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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.