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Finding the Fourth Proportional to 68,039.02, 102,064.29 and 18,791.02

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Solution

The fourth proportional to 68,039.02, 102,064.29 and 18,791.02 is: 28,188.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,039.02 : 102,064.29 = 18,791.02 : x
  2. Step 2: Convert to fraction form
    68,039.02/102,064.29 = 18,791.02/x
  3. Step 3: Cross multiply
    68,039.02x = 102,064.29 × 18,791.02
  4. Step 4: Simplify right side
    68,039.02x = 1,917,892,114.68
  5. Step 5: Solve for x
    x = 1,917,892,114.68/68,039.02
  6. Step 6: Final answer
    x = 28,188.12

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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.