Home / 81,072.98-121,609.87-36,647.72

Finding the Fourth Proportional to 81,072.98, 121,609.87 and 36,647.72

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Solution

The fourth proportional to 81,072.98, 121,609.87 and 36,647.72 is: 54,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,072.98 : 121,609.87 = 36,647.72 : x
  2. Step 2: Convert to fraction form
    81,072.98/121,609.87 = 36,647.72/x
  3. Step 3: Cross multiply
    81,072.98x = 121,609.87 × 36,647.72
  4. Step 4: Simplify right side
    81,072.98x = 4,456,723,765.33
  5. Step 5: Solve for x
    x = 4,456,723,765.33/81,072.98
  6. Step 6: Final answer
    x = 54,971.76

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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.