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Finding the Fourth Proportional to 80,693.60, 120,943.20 and 41,230.40

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Solution

The fourth proportional to 80,693.60, 120,943.20 and 41,230.40 is: 61,795.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,693.60 : 120,943.20 = 41,230.40 : x
  2. Step 2: Convert to fraction form
    80,693.60/120,943.20 = 41,230.40/x
  3. Step 3: Cross multiply
    80,693.60x = 120,943.20 × 41,230.40
  4. Step 4: Simplify right side
    80,693.60x = 4,986,536,513.28
  5. Step 5: Solve for x
    x = 4,986,536,513.28/80,693.60
  6. Step 6: Final answer
    x = 61,795.94

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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.