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Finding the Fourth Proportional to 80,562.51, 120,843.81 and 30,631.07

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Solution

The fourth proportional to 80,562.51, 120,843.81 and 30,631.07 is: 45,946.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,562.51 : 120,843.81 = 30,631.07 : x
  2. Step 2: Convert to fraction form
    80,562.51/120,843.81 = 30,631.07/x
  3. Step 3: Cross multiply
    80,562.51x = 120,843.81 × 30,631.07
  4. Step 4: Simplify right side
    80,562.51x = 3,701,575,505.29
  5. Step 5: Solve for x
    x = 3,701,575,505.29/80,562.51
  6. Step 6: Final answer
    x = 45,946.63

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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.