Home / 69,176.89-103,755.01-19,251.78

Finding the Fourth Proportional to 69,176.89, 103,755.01 and 19,251.78

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Solution

The fourth proportional to 69,176.89, 103,755.01 and 19,251.78 is: 28,874.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,176.89 : 103,755.01 = 19,251.78 : x
  2. Step 2: Convert to fraction form
    69,176.89/103,755.01 = 19,251.78/x
  3. Step 3: Cross multiply
    69,176.89x = 103,755.01 × 19,251.78
  4. Step 4: Simplify right side
    69,176.89x = 1,997,468,808.93
  5. Step 5: Solve for x
    x = 1,997,468,808.93/69,176.89
  6. Step 6: Final answer
    x = 28,874.80

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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.