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Finding the Fourth Proportional to 103,727, 155,555.80 and 40,530.73

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Solution

The fourth proportional to 103,727, 155,555.80 and 40,530.73 is: 60,782.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,727 : 155,555.80 = 40,530.73 : x
  2. Step 2: Convert to fraction form
    103,727/155,555.80 = 40,530.73/x
  3. Step 3: Cross multiply
    103,727x = 155,555.80 × 40,530.73
  4. Step 4: Simplify right side
    103,727x = 6,304,790,129.73
  5. Step 5: Solve for x
    x = 6,304,790,129.73/103,727
  6. Step 6: Final answer
    x = 60,782.54

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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.