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Finding the Fourth Proportional to 84,168.86, 126,270.48 and 34,248.56

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Solution

The fourth proportional to 84,168.86, 126,270.48 and 34,248.56 is: 51,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,168.86 : 126,270.48 = 34,248.56 : x
  2. Step 2: Convert to fraction form
    84,168.86/126,270.48 = 34,248.56/x
  3. Step 3: Cross multiply
    84,168.86x = 126,270.48 × 34,248.56
  4. Step 4: Simplify right side
    84,168.86x = 4,324,582,110.51
  5. Step 5: Solve for x
    x = 4,324,582,110.51/84,168.86
  6. Step 6: Final answer
    x = 51,379.83

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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.