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Finding the Fourth Proportional to 80,647.42, 120,995.72 and 41,232.21

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Solution

The fourth proportional to 80,647.42, 120,995.72 and 41,232.21 is: 61,860.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,647.42 : 120,995.72 = 41,232.21 : x
  2. Step 2: Convert to fraction form
    80,647.42/120,995.72 = 41,232.21/x
  3. Step 3: Cross multiply
    80,647.42x = 120,995.72 × 41,232.21
  4. Step 4: Simplify right side
    80,647.42x = 4,988,920,936.14
  5. Step 5: Solve for x
    x = 4,988,920,936.14/80,647.42
  6. Step 6: Final answer
    x = 61,860.89

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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.