Home / 39,915.35-55,081.30-22,907.78

Finding the Fourth Proportional to 39,915.35, 55,081.30 and 22,907.78

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Solution

The fourth proportional to 39,915.35, 55,081.30 and 22,907.78 is: 31,611.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,915.35 : 55,081.30 = 22,907.78 : x
  2. Step 2: Convert to fraction form
    39,915.35/55,081.30 = 22,907.78/x
  3. Step 3: Cross multiply
    39,915.35x = 55,081.30 × 22,907.78
  4. Step 4: Simplify right side
    39,915.35x = 1,261,789,912.57
  5. Step 5: Solve for x
    x = 1,261,789,912.57/39,915.35
  6. Step 6: Final answer
    x = 31,611.65

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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.