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Finding the Fourth Proportional to 73,213.70, 109,942.01 and 45,686.66

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Solution

The fourth proportional to 73,213.70, 109,942.01 and 45,686.66 is: 68,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,213.70 : 109,942.01 = 45,686.66 : x
  2. Step 2: Convert to fraction form
    73,213.70/109,942.01 = 45,686.66/x
  3. Step 3: Cross multiply
    73,213.70x = 109,942.01 × 45,686.66
  4. Step 4: Simplify right side
    73,213.70x = 5,022,883,230.59
  5. Step 5: Solve for x
    x = 5,022,883,230.59/73,213.70
  6. Step 6: Final answer
    x = 68,605.78

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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.