Home / 81,222-121,819.02-22,062.43

Finding the Fourth Proportional to 81,222, 121,819.02 and 22,062.43

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Solution

The fourth proportional to 81,222, 121,819.02 and 22,062.43 is: 33,089.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,222 : 121,819.02 = 22,062.43 : x
  2. Step 2: Convert to fraction form
    81,222/121,819.02 = 22,062.43/x
  3. Step 3: Cross multiply
    81,222x = 121,819.02 × 22,062.43
  4. Step 4: Simplify right side
    81,222x = 2,687,623,601.42
  5. Step 5: Solve for x
    x = 2,687,623,601.42/81,222
  6. Step 6: Final answer
    x = 33,089.85

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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.