Home / 74,227.32-111,319.20-20,915.75

Finding the Fourth Proportional to 74,227.32, 111,319.20 and 20,915.75

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Solution

The fourth proportional to 74,227.32, 111,319.20 and 20,915.75 is: 31,367.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,227.32 : 111,319.20 = 20,915.75 : x
  2. Step 2: Convert to fraction form
    74,227.32/111,319.20 = 20,915.75/x
  3. Step 3: Cross multiply
    74,227.32x = 111,319.20 × 20,915.75
  4. Step 4: Simplify right side
    74,227.32x = 2,328,324,557.40
  5. Step 5: Solve for x
    x = 2,328,324,557.40/74,227.32
  6. Step 6: Final answer
    x = 31,367.49

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1.5x scale

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.