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Finding the Fourth Proportional to 80,695, 111,359.10 and 45,367

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Solution

The fourth proportional to 80,695, 111,359.10 and 45,367 is: 62,606.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,695 : 111,359.10 = 45,367 : x
  2. Step 2: Convert to fraction form
    80,695/111,359.10 = 45,367/x
  3. Step 3: Cross multiply
    80,695x = 111,359.10 × 45,367
  4. Step 4: Simplify right side
    80,695x = 5,052,028,289.70
  5. Step 5: Solve for x
    x = 5,052,028,289.70/80,695
  6. Step 6: Final answer
    x = 62,606.46

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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.