Home / 81,265.45-121,867.86-27,942.34

Finding the Fourth Proportional to 81,265.45, 121,867.86 and 27,942.34

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Solution

The fourth proportional to 81,265.45, 121,867.86 and 27,942.34 is: 41,903.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,265.45 : 121,867.86 = 27,942.34 : x
  2. Step 2: Convert to fraction form
    81,265.45/121,867.86 = 27,942.34/x
  3. Step 3: Cross multiply
    81,265.45x = 121,867.86 × 27,942.34
  4. Step 4: Simplify right side
    81,265.45x = 3,405,273,179.19
  5. Step 5: Solve for x
    x = 3,405,273,179.19/81,265.45
  6. Step 6: Final answer
    x = 41,903.09

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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.