Home / 81,772.26-112,825.58-49,929.54

Finding the Fourth Proportional to 81,772.26, 112,825.58 and 49,929.54

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Solution

The fourth proportional to 81,772.26, 112,825.58 and 49,929.54 is: 68,890.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,772.26 : 112,825.58 = 49,929.54 : x
  2. Step 2: Convert to fraction form
    81,772.26/112,825.58 = 49,929.54/x
  3. Step 3: Cross multiply
    81,772.26x = 112,825.58 × 49,929.54
  4. Step 4: Simplify right side
    81,772.26x = 5,633,329,059.99
  5. Step 5: Solve for x
    x = 5,633,329,059.99/81,772.26
  6. Step 6: Final answer
    x = 68,890.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.