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Finding the Fourth Proportional to 66,021.73, 91,101.22 and 37,345.30

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Solution

The fourth proportional to 66,021.73, 91,101.22 and 37,345.30 is: 51,531.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.73 : 91,101.22 = 37,345.30 : x
  2. Step 2: Convert to fraction form
    66,021.73/91,101.22 = 37,345.30/x
  3. Step 3: Cross multiply
    66,021.73x = 91,101.22 × 37,345.30
  4. Step 4: Simplify right side
    66,021.73x = 3,402,202,391.27
  5. Step 5: Solve for x
    x = 3,402,202,391.27/66,021.73
  6. Step 6: Final answer
    x = 51,531.55

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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.