Home / 86,146.31-129,219.46-39,366.38

Finding the Fourth Proportional to 86,146.31, 129,219.46 and 39,366.38

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Solution

The fourth proportional to 86,146.31, 129,219.46 and 39,366.38 is: 59,049.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,146.31 : 129,219.46 = 39,366.38 : x
  2. Step 2: Convert to fraction form
    86,146.31/129,219.46 = 39,366.38/x
  3. Step 3: Cross multiply
    86,146.31x = 129,219.46 × 39,366.38
  4. Step 4: Simplify right side
    86,146.31x = 5,086,901,621.24
  5. Step 5: Solve for x
    x = 5,086,901,621.24/86,146.31
  6. Step 6: Final answer
    x = 59,049.56

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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.