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Finding the Fourth Proportional to 68,840.14, 103,297.80 and 26,721.88

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Solution

The fourth proportional to 68,840.14, 103,297.80 and 26,721.88 is: 40,097.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,840.14 : 103,297.80 = 26,721.88 : x
  2. Step 2: Convert to fraction form
    68,840.14/103,297.80 = 26,721.88/x
  3. Step 3: Cross multiply
    68,840.14x = 103,297.80 × 26,721.88
  4. Step 4: Simplify right side
    68,840.14x = 2,760,311,415.86
  5. Step 5: Solve for x
    x = 2,760,311,415.86/68,840.14
  6. Step 6: Final answer
    x = 40,097.41

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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.