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Finding the Fourth Proportional to 73,412.10, 110,348.55 and 72,029.70

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Solution

The fourth proportional to 73,412.10, 110,348.55 and 72,029.70 is: 108,270.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,412.10 : 110,348.55 = 72,029.70 : x
  2. Step 2: Convert to fraction form
    73,412.10/110,348.55 = 72,029.70/x
  3. Step 3: Cross multiply
    73,412.10x = 110,348.55 × 72,029.70
  4. Step 4: Simplify right side
    73,412.10x = 7,948,372,951.94
  5. Step 5: Solve for x
    x = 7,948,372,951.94/73,412.10
  6. Step 6: Final answer
    x = 108,270.61

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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.