Home / 81,396.09-122,047.02-25,221.24

Finding the Fourth Proportional to 81,396.09, 122,047.02 and 25,221.24

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Solution

The fourth proportional to 81,396.09, 122,047.02 and 25,221.24 is: 37,817.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,396.09 : 122,047.02 = 25,221.24 : x
  2. Step 2: Convert to fraction form
    81,396.09/122,047.02 = 25,221.24/x
  3. Step 3: Cross multiply
    81,396.09x = 122,047.02 × 25,221.24
  4. Step 4: Simplify right side
    81,396.09x = 3,078,177,182.70
  5. Step 5: Solve for x
    x = 3,078,177,182.70/81,396.09
  6. Step 6: Final answer
    x = 37,817.26

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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.