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Finding the Fourth Proportional to 68,159.84, 94,086.24 and 39,874.64

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Solution

The fourth proportional to 68,159.84, 94,086.24 and 39,874.64 is: 55,042.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,159.84 : 94,086.24 = 39,874.64 : x
  2. Step 2: Convert to fraction form
    68,159.84/94,086.24 = 39,874.64/x
  3. Step 3: Cross multiply
    68,159.84x = 94,086.24 × 39,874.64
  4. Step 4: Simplify right side
    68,159.84x = 3,751,654,948.95
  5. Step 5: Solve for x
    x = 3,751,654,948.95/68,159.84
  6. Step 6: Final answer
    x = 55,042.02

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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.