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Finding the Fourth Proportional to 80,855.73, 111,584.34 and 45,045.72

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Solution

The fourth proportional to 80,855.73, 111,584.34 and 45,045.72 is: 62,165.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,855.73 : 111,584.34 = 45,045.72 : x
  2. Step 2: Convert to fraction form
    80,855.73/111,584.34 = 45,045.72/x
  3. Step 3: Cross multiply
    80,855.73x = 111,584.34 × 45,045.72
  4. Step 4: Simplify right side
    80,855.73x = 5,026,396,936.02
  5. Step 5: Solve for x
    x = 5,026,396,936.02/80,855.73
  6. Step 6: Final answer
    x = 62,165.01

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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.