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Finding the Fourth Proportional to 68,565.67, 102,789.03 and 30,586.39

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Solution

The fourth proportional to 68,565.67, 102,789.03 and 30,586.39 is: 45,853.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,565.67 : 102,789.03 = 30,586.39 : x
  2. Step 2: Convert to fraction form
    68,565.67/102,789.03 = 30,586.39/x
  3. Step 3: Cross multiply
    68,565.67x = 102,789.03 × 30,586.39
  4. Step 4: Simplify right side
    68,565.67x = 3,143,945,359.30
  5. Step 5: Solve for x
    x = 3,143,945,359.30/68,565.67
  6. Step 6: Final answer
    x = 45,853.05

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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.