Home / 87,376.12-131,091.78-31,215.04

Finding the Fourth Proportional to 87,376.12, 131,091.78 and 31,215.04

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Solution

The fourth proportional to 87,376.12, 131,091.78 and 31,215.04 is: 46,832.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,376.12 : 131,091.78 = 31,215.04 : x
  2. Step 2: Convert to fraction form
    87,376.12/131,091.78 = 31,215.04/x
  3. Step 3: Cross multiply
    87,376.12x = 131,091.78 × 31,215.04
  4. Step 4: Simplify right side
    87,376.12x = 4,092,035,156.37
  5. Step 5: Solve for x
    x = 4,092,035,156.37/87,376.12
  6. Step 6: Final answer
    x = 46,832.42

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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.