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Finding the Fourth Proportional to 85,394.35, 117,843.91 and 49,605.31

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Solution

The fourth proportional to 85,394.35, 117,843.91 and 49,605.31 is: 68,455.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,394.35 : 117,843.91 = 49,605.31 : x
  2. Step 2: Convert to fraction form
    85,394.35/117,843.91 = 49,605.31/x
  3. Step 3: Cross multiply
    85,394.35x = 117,843.91 × 49,605.31
  4. Step 4: Simplify right side
    85,394.35x = 5,845,683,687.16
  5. Step 5: Solve for x
    x = 5,845,683,687.16/85,394.35
  6. Step 6: Final answer
    x = 68,455.16

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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.