Home / 74,478.33-111,724.38-21,171.42

Finding the Fourth Proportional to 74,478.33, 111,724.38 and 21,171.42

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Solution

The fourth proportional to 74,478.33, 111,724.38 and 21,171.42 is: 31,759.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,478.33 : 111,724.38 = 21,171.42 : x
  2. Step 2: Convert to fraction form
    74,478.33/111,724.38 = 21,171.42/x
  3. Step 3: Cross multiply
    74,478.33x = 111,724.38 × 21,171.42
  4. Step 4: Simplify right side
    74,478.33x = 2,365,363,773.22
  5. Step 5: Solve for x
    x = 2,365,363,773.22/74,478.33
  6. Step 6: Final answer
    x = 31,759.09

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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.