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Finding the Fourth Proportional to 67,209.56, 92,745.64 and 36,989

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Solution

The fourth proportional to 67,209.56, 92,745.64 and 36,989 is: 51,042.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,209.56 : 92,745.64 = 36,989 : x
  2. Step 2: Convert to fraction form
    67,209.56/92,745.64 = 36,989/x
  3. Step 3: Cross multiply
    67,209.56x = 92,745.64 × 36,989
  4. Step 4: Simplify right side
    67,209.56x = 3,430,568,477.96
  5. Step 5: Solve for x
    x = 3,430,568,477.96/67,209.56
  6. Step 6: Final answer
    x = 51,042.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.