Home / 68,629.68-102,936.24-31,149.96

Finding the Fourth Proportional to 68,629.68, 102,936.24 and 31,149.96

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Solution

The fourth proportional to 68,629.68, 102,936.24 and 31,149.96 is: 46,721.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,629.68 : 102,936.24 = 31,149.96 : x
  2. Step 2: Convert to fraction form
    68,629.68/102,936.24 = 31,149.96/x
  3. Step 3: Cross multiply
    68,629.68x = 102,936.24 × 31,149.96
  4. Step 4: Simplify right side
    68,629.68x = 3,206,459,758.55
  5. Step 5: Solve for x
    x = 3,206,459,758.55/68,629.68
  6. Step 6: Final answer
    x = 46,721.18

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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.