Home / 87,840.45-121,218.37-47,553.86

Finding the Fourth Proportional to 87,840.45, 121,218.37 and 47,553.86

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Solution

The fourth proportional to 87,840.45, 121,218.37 and 47,553.86 is: 65,623.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,840.45 : 121,218.37 = 47,553.86 : x
  2. Step 2: Convert to fraction form
    87,840.45/121,218.37 = 47,553.86/x
  3. Step 3: Cross multiply
    87,840.45x = 121,218.37 × 47,553.86
  4. Step 4: Simplify right side
    87,840.45x = 5,764,401,507.13
  5. Step 5: Solve for x
    x = 5,764,401,507.13/87,840.45
  6. Step 6: Final answer
    x = 65,623.54

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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.