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Finding the Fourth Proportional to 80,069.80, 120,003.90 and 40,637.80

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Solution

The fourth proportional to 80,069.80, 120,003.90 and 40,637.80 is: 60,905.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,069.80 : 120,003.90 = 40,637.80 : x
  2. Step 2: Convert to fraction form
    80,069.80/120,003.90 = 40,637.80/x
  3. Step 3: Cross multiply
    80,069.80x = 120,003.90 × 40,637.80
  4. Step 4: Simplify right side
    80,069.80x = 4,876,694,487.42
  5. Step 5: Solve for x
    x = 4,876,694,487.42/80,069.80
  6. Step 6: Final answer
    x = 60,905.54

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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.