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Finding the Fourth Proportional to 68,693.76, 103,075.20 and 27,175.68

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Solution

The fourth proportional to 68,693.76, 103,075.20 and 27,175.68 is: 40,777.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,693.76 : 103,075.20 = 27,175.68 : x
  2. Step 2: Convert to fraction form
    68,693.76/103,075.20 = 27,175.68/x
  3. Step 3: Cross multiply
    68,693.76x = 103,075.20 × 27,175.68
  4. Step 4: Simplify right side
    68,693.76x = 2,801,138,651.14
  5. Step 5: Solve for x
    x = 2,801,138,651.14/68,693.76
  6. Step 6: Final answer
    x = 40,777.19

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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.