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Finding the Fourth Proportional to 68,858, 95,040.24 and 42,022.70

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Solution

The fourth proportional to 68,858, 95,040.24 and 42,022.70 is: 58,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,858 : 95,040.24 = 42,022.70 : x
  2. Step 2: Convert to fraction form
    68,858/95,040.24 = 42,022.70/x
  3. Step 3: Cross multiply
    68,858x = 95,040.24 × 42,022.70
  4. Step 4: Simplify right side
    68,858x = 3,993,847,493.45
  5. Step 5: Solve for x
    x = 3,993,847,493.45/68,858
  6. Step 6: Final answer
    x = 58,001.21

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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.