Home / 86,132.12-129,085.75-43,976.56

Finding the Fourth Proportional to 86,132.12, 129,085.75 and 43,976.56

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Solution

The fourth proportional to 86,132.12, 129,085.75 and 43,976.56 is: 65,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,132.12 : 129,085.75 = 43,976.56 : x
  2. Step 2: Convert to fraction form
    86,132.12/129,085.75 = 43,976.56/x
  3. Step 3: Cross multiply
    86,132.12x = 129,085.75 × 43,976.56
  4. Step 4: Simplify right side
    86,132.12x = 5,676,747,022.79
  5. Step 5: Solve for x
    x = 5,676,747,022.79/86,132.12
  6. Step 6: Final answer
    x = 65,907.43

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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.