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Finding the Fourth Proportional to 66,262.80, 91,456.92 and 43,603.86

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Solution

The fourth proportional to 66,262.80, 91,456.92 and 43,603.86 is: 60,182.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,262.80 : 91,456.92 = 43,603.86 : x
  2. Step 2: Convert to fraction form
    66,262.80/91,456.92 = 43,603.86/x
  3. Step 3: Cross multiply
    66,262.80x = 91,456.92 × 43,603.86
  4. Step 4: Simplify right side
    66,262.80x = 3,987,874,735.71
  5. Step 5: Solve for x
    x = 3,987,874,735.71/66,262.80
  6. Step 6: Final answer
    x = 60,182.71

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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.