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Finding the Fourth Proportional to 80,641.44, 120,982.62 and 56,995.56

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Solution

The fourth proportional to 80,641.44, 120,982.62 and 56,995.56 is: 85,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,641.44 : 120,982.62 = 56,995.56 : x
  2. Step 2: Convert to fraction form
    80,641.44/120,982.62 = 56,995.56/x
  3. Step 3: Cross multiply
    80,641.44x = 120,982.62 × 56,995.56
  4. Step 4: Simplify right side
    80,641.44x = 6,895,472,177.17
  5. Step 5: Solve for x
    x = 6,895,472,177.17/80,641.44
  6. Step 6: Final answer
    x = 85,507.80

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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.