Home / 86,128.27-129,136.83-41,125.27

Finding the Fourth Proportional to 86,128.27, 129,136.83 and 41,125.27

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Solution

The fourth proportional to 86,128.27, 129,136.83 and 41,125.27 is: 61,661.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,128.27 : 129,136.83 = 41,125.27 : x
  2. Step 2: Convert to fraction form
    86,128.27/129,136.83 = 41,125.27/x
  3. Step 3: Cross multiply
    86,128.27x = 129,136.83 × 41,125.27
  4. Step 4: Simplify right side
    86,128.27x = 5,310,787,000.69
  5. Step 5: Solve for x
    x = 5,310,787,000.69/86,128.27
  6. Step 6: Final answer
    x = 61,661.37

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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.