Home / 87,519.18-120,779.25-49,795.86

Finding the Fourth Proportional to 87,519.18, 120,779.25 and 49,795.86

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Solution

The fourth proportional to 87,519.18, 120,779.25 and 49,795.86 is: 68,719.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,519.18 : 120,779.25 = 49,795.86 : x
  2. Step 2: Convert to fraction form
    87,519.18/120,779.25 = 49,795.86/x
  3. Step 3: Cross multiply
    87,519.18x = 120,779.25 × 49,795.86
  4. Step 4: Simplify right side
    87,519.18x = 6,014,306,623.91
  5. Step 5: Solve for x
    x = 6,014,306,623.91/87,519.18
  6. Step 6: Final answer
    x = 68,719.87

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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.