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Finding the Fourth Proportional to 80,610.66, 120,918.70 and 36,237.56

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Solution

The fourth proportional to 80,610.66, 120,918.70 and 36,237.56 is: 54,357.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,610.66 : 120,918.70 = 36,237.56 : x
  2. Step 2: Convert to fraction form
    80,610.66/120,918.70 = 36,237.56/x
  3. Step 3: Cross multiply
    80,610.66x = 120,918.70 × 36,237.56
  4. Step 4: Simplify right side
    80,610.66x = 4,381,798,646.37
  5. Step 5: Solve for x
    x = 4,381,798,646.37/80,610.66
  6. Step 6: Final answer
    x = 54,357.56

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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.