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Finding the Fourth Proportional to 68,448.72, 102,679.56 and 26,886

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Solution

The fourth proportional to 68,448.72, 102,679.56 and 26,886 is: 40,331.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,448.72 : 102,679.56 = 26,886 : x
  2. Step 2: Convert to fraction form
    68,448.72/102,679.56 = 26,886/x
  3. Step 3: Cross multiply
    68,448.72x = 102,679.56 × 26,886
  4. Step 4: Simplify right side
    68,448.72x = 2,760,642,650.16
  5. Step 5: Solve for x
    x = 2,760,642,650.16/68,448.72
  6. Step 6: Final answer
    x = 40,331.55

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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.