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Finding the Fourth Proportional to 85,324.05, 127,992.56 and 65,362.41

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Solution

The fourth proportional to 85,324.05, 127,992.56 and 65,362.41 is: 98,048.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,324.05 : 127,992.56 = 65,362.41 : x
  2. Step 2: Convert to fraction form
    85,324.05/127,992.56 = 65,362.41/x
  3. Step 3: Cross multiply
    85,324.05x = 127,992.56 × 65,362.41
  4. Step 4: Simplify right side
    85,324.05x = 8,365,901,856.86
  5. Step 5: Solve for x
    x = 8,365,901,856.86/85,324.05
  6. Step 6: Final answer
    x = 98,048.58

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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.