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Finding the Fourth Proportional to 68,908.91, 95,103.09 and 42,045.71

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Solution

The fourth proportional to 68,908.91, 95,103.09 and 42,045.71 is: 58,028.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,908.91 : 95,103.09 = 42,045.71 : x
  2. Step 2: Convert to fraction form
    68,908.91/95,103.09 = 42,045.71/x
  3. Step 3: Cross multiply
    68,908.91x = 95,103.09 × 42,045.71
  4. Step 4: Simplify right side
    68,908.91x = 3,998,676,942.24
  5. Step 5: Solve for x
    x = 3,998,676,942.24/68,908.91
  6. Step 6: Final answer
    x = 58,028.45

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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.