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Finding the Fourth Proportional to 86,379.59, 129,585.72 and 33,785.75

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Solution

The fourth proportional to 86,379.59, 129,585.72 and 33,785.75 is: 50,685.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,379.59 : 129,585.72 = 33,785.75 : x
  2. Step 2: Convert to fraction form
    86,379.59/129,585.72 = 33,785.75/x
  3. Step 3: Cross multiply
    86,379.59x = 129,585.72 × 33,785.75
  4. Step 4: Simplify right side
    86,379.59x = 4,378,150,739.49
  5. Step 5: Solve for x
    x = 4,378,150,739.49/86,379.59
  6. Step 6: Final answer
    x = 50,685.01

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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.