Home / 86,084.16-129,121.37-26,912.85

Finding the Fourth Proportional to 86,084.16, 129,121.37 and 26,912.85

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Solution

The fourth proportional to 86,084.16, 129,121.37 and 26,912.85 is: 40,367.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,084.16 : 129,121.37 = 26,912.85 : x
  2. Step 2: Convert to fraction form
    86,084.16/129,121.37 = 26,912.85/x
  3. Step 3: Cross multiply
    86,084.16x = 129,121.37 × 26,912.85
  4. Step 4: Simplify right side
    86,084.16x = 3,475,024,062.60
  5. Step 5: Solve for x
    x = 3,475,024,062.60/86,084.16
  6. Step 6: Final answer
    x = 40,367.75

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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.