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Finding the Fourth Proportional to 80,273.10, 120,483.69 and 40,858.62

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Solution

The fourth proportional to 80,273.10, 120,483.69 and 40,858.62 is: 61,325.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,273.10 : 120,483.69 = 40,858.62 : x
  2. Step 2: Convert to fraction form
    80,273.10/120,483.69 = 40,858.62/x
  3. Step 3: Cross multiply
    80,273.10x = 120,483.69 × 40,858.62
  4. Step 4: Simplify right side
    80,273.10x = 4,922,797,305.91
  5. Step 5: Solve for x
    x = 4,922,797,305.91/80,273.10
  6. Step 6: Final answer
    x = 61,325.62

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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.