Home / 40,974.80-61,481.40-21,275.60

Finding the Fourth Proportional to 40,974.80, 61,481.40 and 21,275.60

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Solution

The fourth proportional to 40,974.80, 61,481.40 and 21,275.60 is: 31,923.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,974.80 : 61,481.40 = 21,275.60 : x
  2. Step 2: Convert to fraction form
    40,974.80/61,481.40 = 21,275.60/x
  3. Step 3: Cross multiply
    40,974.80x = 61,481.40 × 21,275.60
  4. Step 4: Simplify right side
    40,974.80x = 1,308,053,673.84
  5. Step 5: Solve for x
    x = 1,308,053,673.84/40,974.80
  6. Step 6: Final answer
    x = 31,923.37

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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.