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Finding the Fourth Proportional to 100,712.37, 151,078.42 and 36,687.91

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Solution

The fourth proportional to 100,712.37, 151,078.42 and 36,687.91 is: 55,035.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,712.37 : 151,078.42 = 36,687.91 : x
  2. Step 2: Convert to fraction form
    100,712.37/151,078.42 = 36,687.91/x
  3. Step 3: Cross multiply
    100,712.37x = 151,078.42 × 36,687.91
  4. Step 4: Simplify right side
    100,712.37x = 5,542,751,220.97
  5. Step 5: Solve for x
    x = 5,542,751,220.97/100,712.37
  6. Step 6: Final answer
    x = 55,035.46

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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.