Home / 49,540.80-74,311.20-40,209.60

Finding the Fourth Proportional to 49,540.80, 74,311.20 and 40,209.60

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Solution

The fourth proportional to 49,540.80, 74,311.20 and 40,209.60 is: 60,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,540.80 : 74,311.20 = 40,209.60 : x
  2. Step 2: Convert to fraction form
    49,540.80/74,311.20 = 40,209.60/x
  3. Step 3: Cross multiply
    49,540.80x = 74,311.20 × 40,209.60
  4. Step 4: Simplify right side
    49,540.80x = 2,988,023,627.52
  5. Step 5: Solve for x
    x = 2,988,023,627.52/49,540.80
  6. Step 6: Final answer
    x = 60,314.40

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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.