Home / 87,738.13-121,078.62-47,451.89

Finding the Fourth Proportional to 87,738.13, 121,078.62 and 47,451.89

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Solution

The fourth proportional to 87,738.13, 121,078.62 and 47,451.89 is: 65,483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,738.13 : 121,078.62 = 47,451.89 : x
  2. Step 2: Convert to fraction form
    87,738.13/121,078.62 = 47,451.89/x
  3. Step 3: Cross multiply
    87,738.13x = 121,078.62 × 47,451.89
  4. Step 4: Simplify right side
    87,738.13x = 5,745,409,660.29
  5. Step 5: Solve for x
    x = 5,745,409,660.29/87,738.13
  6. Step 6: Final answer
    x = 65,483.61

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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.