Home / 81,511.36-122,284.66-25,350.42

Finding the Fourth Proportional to 81,511.36, 122,284.66 and 25,350.42

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Solution

The fourth proportional to 81,511.36, 122,284.66 and 25,350.42 is: 38,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,511.36 : 122,284.66 = 25,350.42 : x
  2. Step 2: Convert to fraction form
    81,511.36/122,284.66 = 25,350.42/x
  3. Step 3: Cross multiply
    81,511.36x = 122,284.66 × 25,350.42
  4. Step 4: Simplify right side
    81,511.36x = 3,099,967,490.56
  5. Step 5: Solve for x
    x = 3,099,967,490.56/81,511.36
  6. Step 6: Final answer
    x = 38,031.11

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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.