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Finding the Fourth Proportional to 72,959.10, 109,353.60 and 33,520.20

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Solution

The fourth proportional to 72,959.10, 109,353.60 and 33,520.20 is: 50,241.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,959.10 : 109,353.60 = 33,520.20 : x
  2. Step 2: Convert to fraction form
    72,959.10/109,353.60 = 33,520.20/x
  3. Step 3: Cross multiply
    72,959.10x = 109,353.60 × 33,520.20
  4. Step 4: Simplify right side
    72,959.10x = 3,665,554,542.72
  5. Step 5: Solve for x
    x = 3,665,554,542.72/72,959.10
  6. Step 6: Final answer
    x = 50,241.22

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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.