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Finding the Fourth Proportional to 68,174.84, 94,106.94 and 39,889.64

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Solution

The fourth proportional to 68,174.84, 94,106.94 and 39,889.64 is: 55,062.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,174.84 : 94,106.94 = 39,889.64 : x
  2. Step 2: Convert to fraction form
    68,174.84/94,106.94 = 39,889.64/x
  3. Step 3: Cross multiply
    68,174.84x = 94,106.94 × 39,889.64
  4. Step 4: Simplify right side
    68,174.84x = 3,753,891,958.10
  5. Step 5: Solve for x
    x = 3,753,891,958.10/68,174.84
  6. Step 6: Final answer
    x = 55,062.72

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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.