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Finding the Fourth Proportional to 73,387.37, 110,046.35 and 28,429.78

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Solution

The fourth proportional to 73,387.37, 110,046.35 and 28,429.78 is: 42,631.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,387.37 : 110,046.35 = 28,429.78 : x
  2. Step 2: Convert to fraction form
    73,387.37/110,046.35 = 28,429.78/x
  3. Step 3: Cross multiply
    73,387.37x = 110,046.35 × 28,429.78
  4. Step 4: Simplify right side
    73,387.37x = 3,128,593,520.30
  5. Step 5: Solve for x
    x = 3,128,593,520.30/73,387.37
  6. Step 6: Final answer
    x = 42,631.23

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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.