Home / 87,478.46-120,778.38-67,299.74

Finding the Fourth Proportional to 87,478.46, 120,778.38 and 67,299.74

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Solution

The fourth proportional to 87,478.46, 120,778.38 and 67,299.74 is: 92,918.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,478.46 : 120,778.38 = 67,299.74 : x
  2. Step 2: Convert to fraction form
    87,478.46/120,778.38 = 67,299.74/x
  3. Step 3: Cross multiply
    87,478.46x = 120,778.38 × 67,299.74
  4. Step 4: Simplify right side
    87,478.46x = 8,128,353,571.62
  5. Step 5: Solve for x
    x = 8,128,353,571.62/87,478.46
  6. Step 6: Final answer
    x = 92,918.34

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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.