Home / 87,355.82-120,391.16-63,440.97

Finding the Fourth Proportional to 87,355.82, 120,391.16 and 63,440.97

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Solution

The fourth proportional to 87,355.82, 120,391.16 and 63,440.97 is: 87,432.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,355.82 : 120,391.16 = 63,440.97 : x
  2. Step 2: Convert to fraction form
    87,355.82/120,391.16 = 63,440.97/x
  3. Step 3: Cross multiply
    87,355.82x = 120,391.16 × 63,440.97
  4. Step 4: Simplify right side
    87,355.82x = 7,637,731,652.62
  5. Step 5: Solve for x
    x = 7,637,731,652.62/87,355.82
  6. Step 6: Final answer
    x = 87,432.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.