Home / 81,186.21-121,822.83-33,834.06

Finding the Fourth Proportional to 81,186.21, 121,822.83 and 33,834.06

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Solution

The fourth proportional to 81,186.21, 121,822.83 and 33,834.06 is: 50,769.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,186.21 : 121,822.83 = 33,834.06 : x
  2. Step 2: Convert to fraction form
    81,186.21/121,822.83 = 33,834.06/x
  3. Step 3: Cross multiply
    81,186.21x = 121,822.83 × 33,834.06
  4. Step 4: Simplify right side
    81,186.21x = 4,121,760,939.59
  5. Step 5: Solve for x
    x = 4,121,760,939.59/81,186.21
  6. Step 6: Final answer
    x = 50,769.22

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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.