Home / 81,189.84-121,784.40-22,025.36

Finding the Fourth Proportional to 81,189.84, 121,784.40 and 22,025.36

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Solution

The fourth proportional to 81,189.84, 121,784.40 and 22,025.36 is: 33,037.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,189.84 : 121,784.40 = 22,025.36 : x
  2. Step 2: Convert to fraction form
    81,189.84/121,784.40 = 22,025.36/x
  3. Step 3: Cross multiply
    81,189.84x = 121,784.40 × 22,025.36
  4. Step 4: Simplify right side
    81,189.84x = 2,682,345,252.38
  5. Step 5: Solve for x
    x = 2,682,345,252.38/81,189.84
  6. Step 6: Final answer
    x = 33,037.94

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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.