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Finding the Fourth Proportional to 81,243.69, 112,112.93 and 44,449.73

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Solution

The fourth proportional to 81,243.69, 112,112.93 and 44,449.73 is: 61,338.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,243.69 : 112,112.93 = 44,449.73 : x
  2. Step 2: Convert to fraction form
    81,243.69/112,112.93 = 44,449.73/x
  3. Step 3: Cross multiply
    81,243.69x = 112,112.93 × 44,449.73
  4. Step 4: Simplify right side
    81,243.69x = 4,983,388,999.59
  5. Step 5: Solve for x
    x = 4,983,388,999.59/81,243.69
  6. Step 6: Final answer
    x = 61,338.78

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Half scale
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Double scale
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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.