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Finding the Fourth Proportional to 69,977.62, 104,997.42 and 36,689.74

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Solution

The fourth proportional to 69,977.62, 104,997.42 and 36,689.74 is: 55,050.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,977.62 : 104,997.42 = 36,689.74 : x
  2. Step 2: Convert to fraction form
    69,977.62/104,997.42 = 36,689.74/x
  3. Step 3: Cross multiply
    69,977.62x = 104,997.42 × 36,689.74
  4. Step 4: Simplify right side
    69,977.62x = 3,852,328,040.47
  5. Step 5: Solve for x
    x = 3,852,328,040.47/69,977.62
  6. Step 6: Final answer
    x = 55,050.86

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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.