Home / 45,190.65-67,789.31-11,910.49

Finding the Fourth Proportional to 45,190.65, 67,789.31 and 11,910.49

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Solution

The fourth proportional to 45,190.65, 67,789.31 and 11,910.49 is: 17,866.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,190.65 : 67,789.31 = 11,910.49 : x
  2. Step 2: Convert to fraction form
    45,190.65/67,789.31 = 11,910.49/x
  3. Step 3: Cross multiply
    45,190.65x = 67,789.31 × 11,910.49
  4. Step 4: Simplify right side
    45,190.65x = 807,403,898.86
  5. Step 5: Solve for x
    x = 807,403,898.86/45,190.65
  6. Step 6: Final answer
    x = 17,866.61

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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.