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Finding the Fourth Proportional to 71,821.62, 108,270.26 and 67,004.74

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Solution

The fourth proportional to 71,821.62, 108,270.26 and 67,004.74 is: 101,008.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,821.62 : 108,270.26 = 67,004.74 : x
  2. Step 2: Convert to fraction form
    71,821.62/108,270.26 = 67,004.74/x
  3. Step 3: Cross multiply
    71,821.62x = 108,270.26 × 67,004.74
  4. Step 4: Simplify right side
    71,821.62x = 7,254,620,621.03
  5. Step 5: Solve for x
    x = 7,254,620,621.03/71,821.62
  6. Step 6: Final answer
    x = 101,008.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.