Home / 87,056.86-120,076.26-79,909.48

Finding the Fourth Proportional to 87,056.86, 120,076.26 and 79,909.48

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Solution

The fourth proportional to 87,056.86, 120,076.26 and 79,909.48 is: 110,217.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,056.86 : 120,076.26 = 79,909.48 : x
  2. Step 2: Convert to fraction form
    87,056.86/120,076.26 = 79,909.48/x
  3. Step 3: Cross multiply
    87,056.86x = 120,076.26 × 79,909.48
  4. Step 4: Simplify right side
    87,056.86x = 9,595,231,496.94
  5. Step 5: Solve for x
    x = 9,595,231,496.94/87,056.86
  6. Step 6: Final answer
    x = 110,217.98

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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.