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Finding the Fourth Proportional to 68,826.97, 103,228.11 and 18,226.32

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Solution

The fourth proportional to 68,826.97, 103,228.11 and 18,226.32 is: 27,336.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,826.97 : 103,228.11 = 18,226.32 : x
  2. Step 2: Convert to fraction form
    68,826.97/103,228.11 = 18,226.32/x
  3. Step 3: Cross multiply
    68,826.97x = 103,228.11 × 18,226.32
  4. Step 4: Simplify right side
    68,826.97x = 1,881,468,565.86
  5. Step 5: Solve for x
    x = 1,881,468,565.86/68,826.97
  6. Step 6: Final answer
    x = 27,336.21

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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.