Home / 77,136.50-115,540.68-45,512.48

Finding the Fourth Proportional to 77,136.50, 115,540.68 and 45,512.48

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Solution

The fourth proportional to 77,136.50, 115,540.68 and 45,512.48 is: 68,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,136.50 : 115,540.68 = 45,512.48 : x
  2. Step 2: Convert to fraction form
    77,136.50/115,540.68 = 45,512.48/x
  3. Step 3: Cross multiply
    77,136.50x = 115,540.68 × 45,512.48
  4. Step 4: Simplify right side
    77,136.50x = 5,258,542,887.69
  5. Step 5: Solve for x
    x = 5,258,542,887.69/77,136.50
  6. Step 6: Final answer
    x = 68,171.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.