Home / 81,190.21-121,828.83-33,838.06

Finding the Fourth Proportional to 81,190.21, 121,828.83 and 33,838.06

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Solution

The fourth proportional to 81,190.21, 121,828.83 and 33,838.06 is: 50,775.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,190.21 : 121,828.83 = 33,838.06 : x
  2. Step 2: Convert to fraction form
    81,190.21/121,828.83 = 33,838.06/x
  3. Step 3: Cross multiply
    81,190.21x = 121,828.83 × 33,838.06
  4. Step 4: Simplify right side
    81,190.21x = 4,122,451,259.27
  5. Step 5: Solve for x
    x = 4,122,451,259.27/81,190.21
  6. Step 6: Final answer
    x = 50,775.23

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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.