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Finding the Fourth Proportional to 68,942.36, 95,140.84 and 38,728.96

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Solution

The fourth proportional to 68,942.36, 95,140.84 and 38,728.96 is: 53,446.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,942.36 : 95,140.84 = 38,728.96 : x
  2. Step 2: Convert to fraction form
    68,942.36/95,140.84 = 38,728.96/x
  3. Step 3: Cross multiply
    68,942.36x = 95,140.84 × 38,728.96
  4. Step 4: Simplify right side
    68,942.36x = 3,684,705,786.73
  5. Step 5: Solve for x
    x = 3,684,705,786.73/68,942.36
  6. Step 6: Final answer
    x = 53,446.18

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1.5x scale

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.