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Finding the Fourth Proportional to 68,992.36, 95,210.34 and 38,775.92

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Solution

The fourth proportional to 68,992.36, 95,210.34 and 38,775.92 is: 53,511.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,992.36 : 95,210.34 = 38,775.92 : x
  2. Step 2: Convert to fraction form
    68,992.36/95,210.34 = 38,775.92/x
  3. Step 3: Cross multiply
    68,992.36x = 95,210.34 × 38,775.92
  4. Step 4: Simplify right side
    68,992.36x = 3,691,867,905.55
  5. Step 5: Solve for x
    x = 3,691,867,905.55/68,992.36
  6. Step 6: Final answer
    x = 53,511.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.