Home / 81,344.32-122,020.80-25,936

Finding the Fourth Proportional to 81,344.32, 122,020.80 and 25,936

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Solution

The fourth proportional to 81,344.32, 122,020.80 and 25,936 is: 38,905.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,344.32 : 122,020.80 = 25,936 : x
  2. Step 2: Convert to fraction form
    81,344.32/122,020.80 = 25,936/x
  3. Step 3: Cross multiply
    81,344.32x = 122,020.80 × 25,936
  4. Step 4: Simplify right side
    81,344.32x = 3,164,731,468.80
  5. Step 5: Solve for x
    x = 3,164,731,468.80/81,344.32
  6. Step 6: Final answer
    x = 38,905.38

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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.