Home / 81,309.43-121,962.66-33,949.99

Finding the Fourth Proportional to 81,309.43, 121,962.66 and 33,949.99

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Solution

The fourth proportional to 81,309.43, 121,962.66 and 33,949.99 is: 50,924.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,309.43 : 121,962.66 = 33,949.99 : x
  2. Step 2: Convert to fraction form
    81,309.43/121,962.66 = 33,949.99/x
  3. Step 3: Cross multiply
    81,309.43x = 121,962.66 × 33,949.99
  4. Step 4: Simplify right side
    81,309.43x = 4,140,631,087.37
  5. Step 5: Solve for x
    x = 4,140,631,087.37/81,309.43
  6. Step 6: Final answer
    x = 50,924.36

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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.