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Finding the Fourth Proportional to 61,177.80, 91,820.70 and 36,186.60

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Solution

The fourth proportional to 61,177.80, 91,820.70 and 36,186.60 is: 54,311.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,177.80 : 91,820.70 = 36,186.60 : x
  2. Step 2: Convert to fraction form
    61,177.80/91,820.70 = 36,186.60/x
  3. Step 3: Cross multiply
    61,177.80x = 91,820.70 × 36,186.60
  4. Step 4: Simplify right side
    61,177.80x = 3,322,678,942.62
  5. Step 5: Solve for x
    x = 3,322,678,942.62/61,177.80
  6. Step 6: Final answer
    x = 54,311.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.