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Finding the Fourth Proportional to 68,224.88, 102,351.04 and 28,781.82

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Solution

The fourth proportional to 68,224.88, 102,351.04 and 28,781.82 is: 43,178.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,224.88 : 102,351.04 = 28,781.82 : x
  2. Step 2: Convert to fraction form
    68,224.88/102,351.04 = 28,781.82/x
  3. Step 3: Cross multiply
    68,224.88x = 102,351.04 × 28,781.82
  4. Step 4: Simplify right side
    68,224.88x = 2,945,849,138.14
  5. Step 5: Solve for x
    x = 2,945,849,138.14/68,224.88
  6. Step 6: Final answer
    x = 43,178.52

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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.