Home / 81,052.20-121,584.45-21,887.03

Finding the Fourth Proportional to 81,052.20, 121,584.45 and 21,887.03

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Solution

The fourth proportional to 81,052.20, 121,584.45 and 21,887.03 is: 32,832.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,052.20 : 121,584.45 = 21,887.03 : x
  2. Step 2: Convert to fraction form
    81,052.20/121,584.45 = 21,887.03/x
  3. Step 3: Cross multiply
    81,052.20x = 121,584.45 × 21,887.03
  4. Step 4: Simplify right side
    81,052.20x = 2,661,121,896.76
  5. Step 5: Solve for x
    x = 2,661,121,896.76/81,052.20
  6. Step 6: Final answer
    x = 32,832.20

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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.