Home / 87,310.92-120,503.57-51,509.73

Finding the Fourth Proportional to 87,310.92, 120,503.57 and 51,509.73

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Solution

The fourth proportional to 87,310.92, 120,503.57 and 51,509.73 is: 71,091.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,310.92 : 120,503.57 = 51,509.73 : x
  2. Step 2: Convert to fraction form
    87,310.92/120,503.57 = 51,509.73/x
  3. Step 3: Cross multiply
    87,310.92x = 120,503.57 × 51,509.73
  4. Step 4: Simplify right side
    87,310.92x = 6,207,106,097.19
  5. Step 5: Solve for x
    x = 6,207,106,097.19/87,310.92
  6. Step 6: Final answer
    x = 71,091.98

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1.5x scale

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.