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Finding the Fourth Proportional to 40,065, 60,069.78 and 28,827.27

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Solution

The fourth proportional to 40,065, 60,069.78 and 28,827.27 is: 43,220.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,065 : 60,069.78 = 28,827.27 : x
  2. Step 2: Convert to fraction form
    40,065/60,069.78 = 28,827.27/x
  3. Step 3: Cross multiply
    40,065x = 60,069.78 × 28,827.27
  4. Step 4: Simplify right side
    40,065x = 1,731,647,766.90
  5. Step 5: Solve for x
    x = 1,731,647,766.90/40,065
  6. Step 6: Final answer
    x = 43,220.96

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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.