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Finding the Fourth Proportional to 68,145.96, 94,022.54 and 40,914.96

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Solution

The fourth proportional to 68,145.96, 94,022.54 and 40,914.96 is: 56,451.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,145.96 : 94,022.54 = 40,914.96 : x
  2. Step 2: Convert to fraction form
    68,145.96/94,022.54 = 40,914.96/x
  3. Step 3: Cross multiply
    68,145.96x = 94,022.54 × 40,914.96
  4. Step 4: Simplify right side
    68,145.96x = 3,846,928,463.20
  5. Step 5: Solve for x
    x = 3,846,928,463.20/68,145.96
  6. Step 6: Final answer
    x = 56,451.31

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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.