Home / 86,286.10-129,429.06-27,126.94

Finding the Fourth Proportional to 86,286.10, 129,429.06 and 27,126.94

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Solution

The fourth proportional to 86,286.10, 129,429.06 and 27,126.94 is: 40,690.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,286.10 : 129,429.06 = 27,126.94 : x
  2. Step 2: Convert to fraction form
    86,286.10/129,429.06 = 27,126.94/x
  3. Step 3: Cross multiply
    86,286.10x = 129,429.06 × 27,126.94
  4. Step 4: Simplify right side
    86,286.10x = 3,511,014,344.88
  5. Step 5: Solve for x
    x = 3,511,014,344.88/86,286.10
  6. Step 6: Final answer
    x = 40,690.38

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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.