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Finding the Fourth Proportional to 80,585.45, 120,836.46 and 36,173.96

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Solution

The fourth proportional to 80,585.45, 120,836.46 and 36,173.96 is: 54,242.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,585.45 : 120,836.46 = 36,173.96 : x
  2. Step 2: Convert to fraction form
    80,585.45/120,836.46 = 36,173.96/x
  3. Step 3: Cross multiply
    80,585.45x = 120,836.46 × 36,173.96
  4. Step 4: Simplify right side
    80,585.45x = 4,371,133,051.71
  5. Step 5: Solve for x
    x = 4,371,133,051.71/80,585.45
  6. Step 6: Final answer
    x = 54,242.21

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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.