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Finding the Fourth Proportional to 81,653.85, 122,481.50 and 22,492.80

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Solution

The fourth proportional to 81,653.85, 122,481.50 and 22,492.80 is: 33,739.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653.85 : 122,481.50 = 22,492.80 : x
  2. Step 2: Convert to fraction form
    81,653.85/122,481.50 = 22,492.80/x
  3. Step 3: Cross multiply
    81,653.85x = 122,481.50 × 22,492.80
  4. Step 4: Simplify right side
    81,653.85x = 2,754,951,770.74
  5. Step 5: Solve for x
    x = 2,754,951,770.74/81,653.85
  6. Step 6: Final answer
    x = 33,739.40

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1.5x scale

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.