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Finding the Fourth Proportional to 66,578.34, 91,797.45 and 43,910.09

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Solution

The fourth proportional to 66,578.34, 91,797.45 and 43,910.09 is: 60,542.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,578.34 : 91,797.45 = 43,910.09 : x
  2. Step 2: Convert to fraction form
    66,578.34/91,797.45 = 43,910.09/x
  3. Step 3: Cross multiply
    66,578.34x = 91,797.45 × 43,910.09
  4. Step 4: Simplify right side
    66,578.34x = 4,030,833,832.28
  5. Step 5: Solve for x
    x = 4,030,833,832.28/66,578.34
  6. Step 6: Final answer
    x = 60,542.72

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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.