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Finding the Fourth Proportional to 80,562.60, 120,843.90 and 43,237.80

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Solution

The fourth proportional to 80,562.60, 120,843.90 and 43,237.80 is: 64,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,562.60 : 120,843.90 = 43,237.80 : x
  2. Step 2: Convert to fraction form
    80,562.60/120,843.90 = 43,237.80/x
  3. Step 3: Cross multiply
    80,562.60x = 120,843.90 × 43,237.80
  4. Step 4: Simplify right side
    80,562.60x = 5,225,024,379.42
  5. Step 5: Solve for x
    x = 5,225,024,379.42/80,562.60
  6. Step 6: Final answer
    x = 64,856.70

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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.