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Finding the Fourth Proportional to 80,485.60, 120,631.20 and 41,022.40

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Solution

The fourth proportional to 80,485.60, 120,631.20 and 41,022.40 is: 61,484.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,485.60 : 120,631.20 = 41,022.40 : x
  2. Step 2: Convert to fraction form
    80,485.60/120,631.20 = 41,022.40/x
  3. Step 3: Cross multiply
    80,485.60x = 120,631.20 × 41,022.40
  4. Step 4: Simplify right side
    80,485.60x = 4,948,581,338.88
  5. Step 5: Solve for x
    x = 4,948,581,338.88/80,485.60
  6. Step 6: Final answer
    x = 61,484.06

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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.