Home / 87,645.50-120,975.60-51,847.95

Finding the Fourth Proportional to 87,645.50, 120,975.60 and 51,847.95

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Solution

The fourth proportional to 87,645.50, 120,975.60 and 51,847.95 is: 71,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,645.50 : 120,975.60 = 51,847.95 : x
  2. Step 2: Convert to fraction form
    87,645.50/120,975.60 = 51,847.95/x
  3. Step 3: Cross multiply
    87,645.50x = 120,975.60 × 51,847.95
  4. Step 4: Simplify right side
    87,645.50x = 6,272,336,860.02
  5. Step 5: Solve for x
    x = 6,272,336,860.02/87,645.50
  6. Step 6: Final answer
    x = 71,564.85

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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.