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Finding the Fourth Proportional to 68,739.44, 103,121.39 and 35,450.51

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Solution

The fourth proportional to 68,739.44, 103,121.39 and 35,450.51 is: 53,182.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,739.44 : 103,121.39 = 35,450.51 : x
  2. Step 2: Convert to fraction form
    68,739.44/103,121.39 = 35,450.51/x
  3. Step 3: Cross multiply
    68,739.44x = 103,121.39 × 35,450.51
  4. Step 4: Simplify right side
    68,739.44x = 3,655,705,440.43
  5. Step 5: Solve for x
    x = 3,655,705,440.43/68,739.44
  6. Step 6: Final answer
    x = 53,182.07

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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.