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Finding the Fourth Proportional to 81,169.97, 112,014.24 and 45,359.97

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Solution

The fourth proportional to 81,169.97, 112,014.24 and 45,359.97 is: 62,596.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,169.97 : 112,014.24 = 45,359.97 : x
  2. Step 2: Convert to fraction form
    81,169.97/112,014.24 = 45,359.97/x
  3. Step 3: Cross multiply
    81,169.97x = 112,014.24 × 45,359.97
  4. Step 4: Simplify right side
    81,169.97x = 5,080,962,872.63
  5. Step 5: Solve for x
    x = 5,080,962,872.63/81,169.97
  6. Step 6: Final answer
    x = 62,596.58

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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.