Home / 87,725.77-131,587.43-21,165.34

Finding the Fourth Proportional to 87,725.77, 131,587.43 and 21,165.34

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Solution

The fourth proportional to 87,725.77, 131,587.43 and 21,165.34 is: 31,747.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,725.77 : 131,587.43 = 21,165.34 : x
  2. Step 2: Convert to fraction form
    87,725.77/131,587.43 = 21,165.34/x
  3. Step 3: Cross multiply
    87,725.77x = 131,587.43 × 21,165.34
  4. Step 4: Simplify right side
    87,725.77x = 2,785,091,931.91
  5. Step 5: Solve for x
    x = 2,785,091,931.91/87,725.77
  6. Step 6: Final answer
    x = 31,747.71

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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.