Home / 81,028.35-121,542.66-21,864.06

Finding the Fourth Proportional to 81,028.35, 121,542.66 and 21,864.06

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Solution

The fourth proportional to 81,028.35, 121,542.66 and 21,864.06 is: 32,796.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,028.35 : 121,542.66 = 21,864.06 : x
  2. Step 2: Convert to fraction form
    81,028.35/121,542.66 = 21,864.06/x
  3. Step 3: Cross multiply
    81,028.35x = 121,542.66 × 21,864.06
  4. Step 4: Simplify right side
    81,028.35x = 2,657,416,010.80
  5. Step 5: Solve for x
    x = 2,657,416,010.80/81,028.35
  6. Step 6: Final answer
    x = 32,796.13

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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.