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Finding the Fourth Proportional to 68,379.04, 102,568.56 and 19,131.04

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Solution

The fourth proportional to 68,379.04, 102,568.56 and 19,131.04 is: 28,696.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,379.04 : 102,568.56 = 19,131.04 : x
  2. Step 2: Convert to fraction form
    68,379.04/102,568.56 = 19,131.04/x
  3. Step 3: Cross multiply
    68,379.04x = 102,568.56 × 19,131.04
  4. Step 4: Simplify right side
    68,379.04x = 1,962,243,224.10
  5. Step 5: Solve for x
    x = 1,962,243,224.10/68,379.04
  6. Step 6: Final answer
    x = 28,696.56

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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.