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Finding the Fourth Proportional to 81,293.57, 112,189.49 and 45,481.44

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Solution

The fourth proportional to 81,293.57, 112,189.49 and 45,481.44 is: 62,766.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,293.57 : 112,189.49 = 45,481.44 : x
  2. Step 2: Convert to fraction form
    81,293.57/112,189.49 = 45,481.44/x
  3. Step 3: Cross multiply
    81,293.57x = 112,189.49 × 45,481.44
  4. Step 4: Simplify right side
    81,293.57x = 5,102,539,558.07
  5. Step 5: Solve for x
    x = 5,102,539,558.07/81,293.57
  6. Step 6: Final answer
    x = 62,766.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.