Home / 81,972.20-122,891.99-34,556.64

Finding the Fourth Proportional to 81,972.20, 122,891.99 and 34,556.64

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Solution

The fourth proportional to 81,972.20, 122,891.99 and 34,556.64 is: 51,807.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,972.20 : 122,891.99 = 34,556.64 : x
  2. Step 2: Convert to fraction form
    81,972.20/122,891.99 = 34,556.64/x
  3. Step 3: Cross multiply
    81,972.20x = 122,891.99 × 34,556.64
  4. Step 4: Simplify right side
    81,972.20x = 4,246,734,084.53
  5. Step 5: Solve for x
    x = 4,246,734,084.53/81,972.20
  6. Step 6: Final answer
    x = 51,807.01

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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.