Home / 81,028.40-121,536.84-21,867.44

Finding the Fourth Proportional to 81,028.40, 121,536.84 and 21,867.44

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Solution

The fourth proportional to 81,028.40, 121,536.84 and 21,867.44 is: 32,799.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,028.40 : 121,536.84 = 21,867.44 : x
  2. Step 2: Convert to fraction form
    81,028.40/121,536.84 = 21,867.44/x
  3. Step 3: Cross multiply
    81,028.40x = 121,536.84 × 21,867.44
  4. Step 4: Simplify right side
    81,028.40x = 2,657,699,556.49
  5. Step 5: Solve for x
    x = 2,657,699,556.49/81,028.40
  6. Step 6: Final answer
    x = 32,799.61

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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.