Home / 81,815.24-112,869.78-51,576.68

Finding the Fourth Proportional to 81,815.24, 112,869.78 and 51,576.68

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Solution

The fourth proportional to 81,815.24, 112,869.78 and 51,576.68 is: 71,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,815.24 : 112,869.78 = 51,576.68 : x
  2. Step 2: Convert to fraction form
    81,815.24/112,869.78 = 51,576.68/x
  3. Step 3: Cross multiply
    81,815.24x = 112,869.78 × 51,576.68
  4. Step 4: Simplify right side
    81,815.24x = 5,821,448,524.73
  5. Step 5: Solve for x
    x = 5,821,448,524.73/81,815.24
  6. Step 6: Final answer
    x = 71,153.60

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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.