Home / 86,563.92-129,853.32-30,399.21

Finding the Fourth Proportional to 86,563.92, 129,853.32 and 30,399.21

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Solution

The fourth proportional to 86,563.92, 129,853.32 and 30,399.21 is: 45,601.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,563.92 : 129,853.32 = 30,399.21 : x
  2. Step 2: Convert to fraction form
    86,563.92/129,853.32 = 30,399.21/x
  3. Step 3: Cross multiply
    86,563.92x = 129,853.32 × 30,399.21
  4. Step 4: Simplify right side
    86,563.92x = 3,947,438,343.88
  5. Step 5: Solve for x
    x = 3,947,438,343.88/86,563.92
  6. Step 6: Final answer
    x = 45,601.43

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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.