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Finding the Fourth Proportional to 84,169.73, 126,210.24 and 28,003.92

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Solution

The fourth proportional to 84,169.73, 126,210.24 and 28,003.92 is: 41,991.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,169.73 : 126,210.24 = 28,003.92 : x
  2. Step 2: Convert to fraction form
    84,169.73/126,210.24 = 28,003.92/x
  3. Step 3: Cross multiply
    84,169.73x = 126,210.24 × 28,003.92
  4. Step 4: Simplify right side
    84,169.73x = 3,534,381,464.14
  5. Step 5: Solve for x
    x = 3,534,381,464.14/84,169.73
  6. Step 6: Final answer
    x = 41,991.13

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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.