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Finding the Fourth Proportional to 110,832.80, 166,216.80 and 39,747.20

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Solution

The fourth proportional to 110,832.80, 166,216.80 and 39,747.20 is: 59,609.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,832.80 : 166,216.80 = 39,747.20 : x
  2. Step 2: Convert to fraction form
    110,832.80/166,216.80 = 39,747.20/x
  3. Step 3: Cross multiply
    110,832.80x = 166,216.80 × 39,747.20
  4. Step 4: Simplify right side
    110,832.80x = 6,606,652,392.96
  5. Step 5: Solve for x
    x = 6,606,652,392.96/110,832.80
  6. Step 6: Final answer
    x = 59,609.18

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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.