Home / 81,045.20-111,892.92-52,379.84

Finding the Fourth Proportional to 81,045.20, 111,892.92 and 52,379.84

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Solution

The fourth proportional to 81,045.20, 111,892.92 and 52,379.84 is: 72,316.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,045.20 : 111,892.92 = 52,379.84 : x
  2. Step 2: Convert to fraction form
    81,045.20/111,892.92 = 52,379.84/x
  3. Step 3: Cross multiply
    81,045.20x = 111,892.92 × 52,379.84
  4. Step 4: Simplify right side
    81,045.20x = 5,860,933,246.73
  5. Step 5: Solve for x
    x = 5,860,933,246.73/81,045.20
  6. Step 6: Final answer
    x = 72,316.85

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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.