Home / 81,136.41-111,960.69-47,144.54

Finding the Fourth Proportional to 81,136.41, 111,960.69 and 47,144.54

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Solution

The fourth proportional to 81,136.41, 111,960.69 and 47,144.54 is: 65,055.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,136.41 : 111,960.69 = 47,144.54 : x
  2. Step 2: Convert to fraction form
    81,136.41/111,960.69 = 47,144.54/x
  3. Step 3: Cross multiply
    81,136.41x = 111,960.69 × 47,144.54
  4. Step 4: Simplify right side
    81,136.41x = 5,278,334,668.33
  5. Step 5: Solve for x
    x = 5,278,334,668.33/81,136.41
  6. Step 6: Final answer
    x = 65,055.07

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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.