Home / 87,845.11-121,225.68-47,558.78

Finding the Fourth Proportional to 87,845.11, 121,225.68 and 47,558.78

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Solution

The fourth proportional to 87,845.11, 121,225.68 and 47,558.78 is: 65,630.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,845.11 : 121,225.68 = 47,558.78 : x
  2. Step 2: Convert to fraction form
    87,845.11/121,225.68 = 47,558.78/x
  3. Step 3: Cross multiply
    87,845.11x = 121,225.68 × 47,558.78
  4. Step 4: Simplify right side
    87,845.11x = 5,765,345,604.72
  5. Step 5: Solve for x
    x = 5,765,345,604.72/87,845.11
  6. Step 6: Final answer
    x = 65,630.81

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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.