Home / 87,609.80-120,895.86-49,883.72

Finding the Fourth Proportional to 87,609.80, 120,895.86 and 49,883.72

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Solution

The fourth proportional to 87,609.80, 120,895.86 and 49,883.72 is: 68,836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,609.80 : 120,895.86 = 49,883.72 : x
  2. Step 2: Convert to fraction form
    87,609.80/120,895.86 = 49,883.72/x
  3. Step 3: Cross multiply
    87,609.80x = 120,895.86 × 49,883.72
  4. Step 4: Simplify right side
    87,609.80x = 6,030,735,229.40
  5. Step 5: Solve for x
    x = 6,030,735,229.40/87,609.80
  6. Step 6: Final answer
    x = 68,836.31

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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.