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Finding the Fourth Proportional to 68,618.80, 102,937.80 and 29,175.60

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Solution

The fourth proportional to 68,618.80, 102,937.80 and 29,175.60 is: 43,767.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,618.80 : 102,937.80 = 29,175.60 : x
  2. Step 2: Convert to fraction form
    68,618.80/102,937.80 = 29,175.60/x
  3. Step 3: Cross multiply
    68,618.80x = 102,937.80 × 29,175.60
  4. Step 4: Simplify right side
    68,618.80x = 3,003,272,077.68
  5. Step 5: Solve for x
    x = 3,003,272,077.68/68,618.80
  6. Step 6: Final answer
    x = 43,767.48

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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.