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Finding the Fourth Proportional to 68,376.52, 102,551.77 and 28,961.29

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Solution

The fourth proportional to 68,376.52, 102,551.77 and 28,961.29 is: 43,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,376.52 : 102,551.77 = 28,961.29 : x
  2. Step 2: Convert to fraction form
    68,376.52/102,551.77 = 28,961.29/x
  3. Step 3: Cross multiply
    68,376.52x = 102,551.77 × 28,961.29
  4. Step 4: Simplify right side
    68,376.52x = 2,970,031,550.98
  5. Step 5: Solve for x
    x = 2,970,031,550.98/68,376.52
  6. Step 6: Final answer
    x = 43,436.42

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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.