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Finding the Fourth Proportional to 66,579.77, 91,840.03 and 43,910.71

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Solution

The fourth proportional to 66,579.77, 91,840.03 and 43,910.71 is: 60,570.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,579.77 : 91,840.03 = 43,910.71 : x
  2. Step 2: Convert to fraction form
    66,579.77/91,840.03 = 43,910.71/x
  3. Step 3: Cross multiply
    66,579.77x = 91,840.03 × 43,910.71
  4. Step 4: Simplify right side
    66,579.77x = 4,032,760,584.34
  5. Step 5: Solve for x
    x = 4,032,760,584.34/66,579.77
  6. Step 6: Final answer
    x = 60,570.36

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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.