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Finding the Fourth Proportional to 81,481.80, 112,435.87 and 45,182.33

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Solution

The fourth proportional to 81,481.80, 112,435.87 and 45,182.33 is: 62,346.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,481.80 : 112,435.87 = 45,182.33 : x
  2. Step 2: Convert to fraction form
    81,481.80/112,435.87 = 45,182.33/x
  3. Step 3: Cross multiply
    81,481.80x = 112,435.87 × 45,182.33
  4. Step 4: Simplify right side
    81,481.80x = 5,080,114,856.69
  5. Step 5: Solve for x
    x = 5,080,114,856.69/81,481.80
  6. Step 6: Final answer
    x = 62,346.62

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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.