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Finding the Fourth Proportional to 80,562.50, 120,843.80 and 30,631.06

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Solution

The fourth proportional to 80,562.50, 120,843.80 and 30,631.06 is: 45,946.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,562.50 : 120,843.80 = 30,631.06 : x
  2. Step 2: Convert to fraction form
    80,562.50/120,843.80 = 30,631.06/x
  3. Step 3: Cross multiply
    80,562.50x = 120,843.80 × 30,631.06
  4. Step 4: Simplify right side
    80,562.50x = 3,701,573,801.19
  5. Step 5: Solve for x
    x = 3,701,573,801.19/80,562.50
  6. Step 6: Final answer
    x = 45,946.61

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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.