Home / 172,305.91-258,429.70-47,617.75

Finding the Fourth Proportional to 172,305.91, 258,429.70 and 47,617.75

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Solution

The fourth proportional to 172,305.91, 258,429.70 and 47,617.75 is: 71,418.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,305.91 : 258,429.70 = 47,617.75 : x
  2. Step 2: Convert to fraction form
    172,305.91/258,429.70 = 47,617.75/x
  3. Step 3: Cross multiply
    172,305.91x = 258,429.70 × 47,617.75
  4. Step 4: Simplify right side
    172,305.91x = 12,305,840,847.18
  5. Step 5: Solve for x
    x = 12,305,840,847.18/172,305.91
  6. Step 6: Final answer
    x = 71,418.57

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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.