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Finding the Fourth Proportional to 73,269.30, 109,871.10 and 28,873.20

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Solution

The fourth proportional to 73,269.30, 109,871.10 and 28,873.20 is: 43,296.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,269.30 : 109,871.10 = 28,873.20 : x
  2. Step 2: Convert to fraction form
    73,269.30/109,871.10 = 28,873.20/x
  3. Step 3: Cross multiply
    73,269.30x = 109,871.10 × 28,873.20
  4. Step 4: Simplify right side
    73,269.30x = 3,172,330,244.52
  5. Step 5: Solve for x
    x = 3,172,330,244.52/73,269.30
  6. Step 6: Final answer
    x = 43,296.85

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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.