Home / 81,964.93-122,936.63-25,805.33

Finding the Fourth Proportional to 81,964.93, 122,936.63 and 25,805.33

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Solution

The fourth proportional to 81,964.93, 122,936.63 and 25,805.33 is: 38,704.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,964.93 : 122,936.63 = 25,805.33 : x
  2. Step 2: Convert to fraction form
    81,964.93/122,936.63 = 25,805.33/x
  3. Step 3: Cross multiply
    81,964.93x = 122,936.63 × 25,805.33
  4. Step 4: Simplify right side
    81,964.93x = 3,172,420,484.55
  5. Step 5: Solve for x
    x = 3,172,420,484.55/81,964.93
  6. Step 6: Final answer
    x = 38,704.61

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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.