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Finding the Fourth Proportional to 69,658.41, 104,487.63 and 28,076.25

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Solution

The fourth proportional to 69,658.41, 104,487.63 and 28,076.25 is: 42,114.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,658.41 : 104,487.63 = 28,076.25 : x
  2. Step 2: Convert to fraction form
    69,658.41/104,487.63 = 28,076.25/x
  3. Step 3: Cross multiply
    69,658.41x = 104,487.63 × 28,076.25
  4. Step 4: Simplify right side
    69,658.41x = 2,933,620,821.79
  5. Step 5: Solve for x
    x = 2,933,620,821.79/69,658.41
  6. Step 6: Final answer
    x = 42,114.38

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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.