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Finding the Fourth Proportional to 81,763.73, 122,539.49 and 36,751.83

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Solution

The fourth proportional to 81,763.73, 122,539.49 and 36,751.83 is: 55,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,763.73 : 122,539.49 = 36,751.83 : x
  2. Step 2: Convert to fraction form
    81,763.73/122,539.49 = 36,751.83/x
  3. Step 3: Cross multiply
    81,763.73x = 122,539.49 × 36,751.83
  4. Step 4: Simplify right side
    81,763.73x = 4,503,550,504.77
  5. Step 5: Solve for x
    x = 4,503,550,504.77/81,763.73
  6. Step 6: Final answer
    x = 55,080.05

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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.