Home / 87,921.13-131,881.85-21,361.31

Finding the Fourth Proportional to 87,921.13, 131,881.85 and 21,361.31

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Solution

The fourth proportional to 87,921.13, 131,881.85 and 21,361.31 is: 32,042.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.13 : 131,881.85 = 21,361.31 : x
  2. Step 2: Convert to fraction form
    87,921.13/131,881.85 = 21,361.31/x
  3. Step 3: Cross multiply
    87,921.13x = 131,881.85 × 21,361.31
  4. Step 4: Simplify right side
    87,921.13x = 2,817,169,081.22
  5. Step 5: Solve for x
    x = 2,817,169,081.22/87,921.13
  6. Step 6: Final answer
    x = 32,042.00

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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.