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Finding the Fourth Proportional to 81,504.40, 112,481.48 and 45,696.73

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Solution

The fourth proportional to 81,504.40, 112,481.48 and 45,696.73 is: 63,064.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,504.40 : 112,481.48 = 45,696.73 : x
  2. Step 2: Convert to fraction form
    81,504.40/112,481.48 = 45,696.73/x
  3. Step 3: Cross multiply
    81,504.40x = 112,481.48 × 45,696.73
  4. Step 4: Simplify right side
    81,504.40x = 5,140,035,821.56
  5. Step 5: Solve for x
    x = 5,140,035,821.56/81,504.40
  6. Step 6: Final answer
    x = 63,064.52

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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.