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Finding the Fourth Proportional to 68,707.32, 103,067.46 and 21,949.08

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Solution

The fourth proportional to 68,707.32, 103,067.46 and 21,949.08 is: 32,925.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,707.32 : 103,067.46 = 21,949.08 : x
  2. Step 2: Convert to fraction form
    68,707.32/103,067.46 = 21,949.08/x
  3. Step 3: Cross multiply
    68,707.32x = 103,067.46 × 21,949.08
  4. Step 4: Simplify right side
    68,707.32x = 2,262,235,924.94
  5. Step 5: Solve for x
    x = 2,262,235,924.94/68,707.32
  6. Step 6: Final answer
    x = 32,925.69

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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.