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Finding the Fourth Proportional to 80,241.40, 120,131.70 and 49,137.40

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Solution

The fourth proportional to 80,241.40, 120,131.70 and 49,137.40 is: 73,565.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,241.40 : 120,131.70 = 49,137.40 : x
  2. Step 2: Convert to fraction form
    80,241.40/120,131.70 = 49,137.40/x
  3. Step 3: Cross multiply
    80,241.40x = 120,131.70 × 49,137.40
  4. Step 4: Simplify right side
    80,241.40x = 5,902,959,395.58
  5. Step 5: Solve for x
    x = 5,902,959,395.58/80,241.40
  6. Step 6: Final answer
    x = 73,565.01

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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.