Home / 49,755.28-74,635.64-20,168.72

Finding the Fourth Proportional to 49,755.28, 74,635.64 and 20,168.72

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Solution

The fourth proportional to 49,755.28, 74,635.64 and 20,168.72 is: 30,254.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,755.28 : 74,635.64 = 20,168.72 : x
  2. Step 2: Convert to fraction form
    49,755.28/74,635.64 = 20,168.72/x
  3. Step 3: Cross multiply
    49,755.28x = 74,635.64 × 20,168.72
  4. Step 4: Simplify right side
    49,755.28x = 1,505,305,325.18
  5. Step 5: Solve for x
    x = 1,505,305,325.18/49,755.28
  6. Step 6: Final answer
    x = 30,254.18

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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.