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Finding the Fourth Proportional to 68,774.78, 103,162.17 and 45,395.75

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Solution

The fourth proportional to 68,774.78, 103,162.17 and 45,395.75 is: 68,093.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,774.78 : 103,162.17 = 45,395.75 : x
  2. Step 2: Convert to fraction form
    68,774.78/103,162.17 = 45,395.75/x
  3. Step 3: Cross multiply
    68,774.78x = 103,162.17 × 45,395.75
  4. Step 4: Simplify right side
    68,774.78x = 4,683,124,078.78
  5. Step 5: Solve for x
    x = 4,683,124,078.78/68,774.78
  6. Step 6: Final answer
    x = 68,093.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.