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Finding the Fourth Proportional to 71,900.50, 99,230.10 and 43,229.52

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Solution

The fourth proportional to 71,900.50, 99,230.10 and 43,229.52 is: 59,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,900.50 : 99,230.10 = 43,229.52 : x
  2. Step 2: Convert to fraction form
    71,900.50/99,230.10 = 43,229.52/x
  3. Step 3: Cross multiply
    71,900.50x = 99,230.10 × 43,229.52
  4. Step 4: Simplify right side
    71,900.50x = 4,289,669,592.55
  5. Step 5: Solve for x
    x = 4,289,669,592.55/71,900.50
  6. Step 6: Final answer
    x = 59,661.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.