Home / 81,291.84-121,959.66-33,891.18

Finding the Fourth Proportional to 81,291.84, 121,959.66 and 33,891.18

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Solution

The fourth proportional to 81,291.84, 121,959.66 and 33,891.18 is: 50,845.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,291.84 : 121,959.66 = 33,891.18 : x
  2. Step 2: Convert to fraction form
    81,291.84/121,959.66 = 33,891.18/x
  3. Step 3: Cross multiply
    81,291.84x = 121,959.66 × 33,891.18
  4. Step 4: Simplify right side
    81,291.84x = 4,133,356,789.80
  5. Step 5: Solve for x
    x = 4,133,356,789.80/81,291.84
  6. Step 6: Final answer
    x = 50,845.90

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1.5x scale

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.