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Finding the Fourth Proportional to 71,996.20, 107,994.30 and 36,939.40

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Solution

The fourth proportional to 71,996.20, 107,994.30 and 36,939.40 is: 55,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,996.20 : 107,994.30 = 36,939.40 : x
  2. Step 2: Convert to fraction form
    71,996.20/107,994.30 = 36,939.40/x
  3. Step 3: Cross multiply
    71,996.20x = 107,994.30 × 36,939.40
  4. Step 4: Simplify right side
    71,996.20x = 3,989,244,645.42
  5. Step 5: Solve for x
    x = 3,989,244,645.42/71,996.20
  6. Step 6: Final answer
    x = 55,409.10

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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.