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Finding the Fourth Proportional to 68,950.56, 95,151.72 and 39,142.56

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Solution

The fourth proportional to 68,950.56, 95,151.72 and 39,142.56 is: 54,016.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,950.56 : 95,151.72 = 39,142.56 : x
  2. Step 2: Convert to fraction form
    68,950.56/95,151.72 = 39,142.56/x
  3. Step 3: Cross multiply
    68,950.56x = 95,151.72 × 39,142.56
  4. Step 4: Simplify right side
    68,950.56x = 3,724,481,909.20
  5. Step 5: Solve for x
    x = 3,724,481,909.20/68,950.56
  6. Step 6: Final answer
    x = 54,016.70

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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.