Home / 86,129.27-129,138.33-41,126.27

Finding the Fourth Proportional to 86,129.27, 129,138.33 and 41,126.27

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Solution

The fourth proportional to 86,129.27, 129,138.33 and 41,126.27 is: 61,662.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,129.27 : 129,138.33 = 41,126.27 : x
  2. Step 2: Convert to fraction form
    86,129.27/129,138.33 = 41,126.27/x
  3. Step 3: Cross multiply
    86,129.27x = 129,138.33 × 41,126.27
  4. Step 4: Simplify right side
    86,129.27x = 5,310,977,826.93
  5. Step 5: Solve for x
    x = 5,310,977,826.93/86,129.27
  6. Step 6: Final answer
    x = 61,662.87

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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.