Home / 87,861.98-121,249.36-47,575.86

Finding the Fourth Proportional to 87,861.98, 121,249.36 and 47,575.86

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Solution

The fourth proportional to 87,861.98, 121,249.36 and 47,575.86 is: 65,654.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,861.98 : 121,249.36 = 47,575.86 : x
  2. Step 2: Convert to fraction form
    87,861.98/121,249.36 = 47,575.86/x
  3. Step 3: Cross multiply
    87,861.98x = 121,249.36 × 47,575.86
  4. Step 4: Simplify right side
    87,861.98x = 5,768,541,913.62
  5. Step 5: Solve for x
    x = 5,768,541,913.62/87,861.98
  6. Step 6: Final answer
    x = 65,654.58

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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.