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Finding the Fourth Proportional to 68,164.64, 94,042.86 and 39,468.64

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Solution

The fourth proportional to 68,164.64, 94,042.86 and 39,468.64 is: 54,452.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,164.64 : 94,042.86 = 39,468.64 : x
  2. Step 2: Convert to fraction form
    68,164.64/94,042.86 = 39,468.64/x
  3. Step 3: Cross multiply
    68,164.64x = 94,042.86 × 39,468.64
  4. Step 4: Simplify right side
    68,164.64x = 3,711,743,801.14
  5. Step 5: Solve for x
    x = 3,711,743,801.14/68,164.64
  6. Step 6: Final answer
    x = 54,452.62

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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.