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Finding the Fourth Proportional to 66,137.89, 91,270.95 and 35,923.80

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Solution

The fourth proportional to 66,137.89, 91,270.95 and 35,923.80 is: 49,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,137.89 : 91,270.95 = 35,923.80 : x
  2. Step 2: Convert to fraction form
    66,137.89/91,270.95 = 35,923.80/x
  3. Step 3: Cross multiply
    66,137.89x = 91,270.95 × 35,923.80
  4. Step 4: Simplify right side
    66,137.89x = 3,278,799,353.61
  5. Step 5: Solve for x
    x = 3,278,799,353.61/66,137.89
  6. Step 6: Final answer
    x = 49,575.20

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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.