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Finding the Fourth Proportional to 66,744, 92,122.44 and 39,898.56

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Solution

The fourth proportional to 66,744, 92,122.44 and 39,898.56 is: 55,069.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,744 : 92,122.44 = 39,898.56 : x
  2. Step 2: Convert to fraction form
    66,744/92,122.44 = 39,898.56/x
  3. Step 3: Cross multiply
    66,744x = 92,122.44 × 39,898.56
  4. Step 4: Simplify right side
    66,744x = 3,675,552,699.69
  5. Step 5: Solve for x
    x = 3,675,552,699.69/66,744
  6. Step 6: Final answer
    x = 55,069.41

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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.