Home / 81,844.26-122,765.83-21,054.43

Finding the Fourth Proportional to 81,844.26, 122,765.83 and 21,054.43

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Solution

The fourth proportional to 81,844.26, 122,765.83 and 21,054.43 is: 31,581.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,844.26 : 122,765.83 = 21,054.43 : x
  2. Step 2: Convert to fraction form
    81,844.26/122,765.83 = 21,054.43/x
  3. Step 3: Cross multiply
    81,844.26x = 122,765.83 × 21,054.43
  4. Step 4: Simplify right side
    81,844.26x = 2,584,764,574.13
  5. Step 5: Solve for x
    x = 2,584,764,574.13/81,844.26
  6. Step 6: Final answer
    x = 31,581.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.