Home / 86,082.78-129,119.31-26,911.47

Finding the Fourth Proportional to 86,082.78, 129,119.31 and 26,911.47

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Solution

The fourth proportional to 86,082.78, 129,119.31 and 26,911.47 is: 40,365.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,082.78 : 129,119.31 = 26,911.47 : x
  2. Step 2: Convert to fraction form
    86,082.78/129,119.31 = 26,911.47/x
  3. Step 3: Cross multiply
    86,082.78x = 129,119.31 × 26,911.47
  4. Step 4: Simplify right side
    86,082.78x = 3,474,790,437.49
  5. Step 5: Solve for x
    x = 3,474,790,437.49/86,082.78
  6. Step 6: Final answer
    x = 40,365.69

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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.