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Finding the Fourth Proportional to 86,908.25, 119,933.39 and 47,164.25

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Solution

The fourth proportional to 86,908.25, 119,933.39 and 47,164.25 is: 65,086.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,908.25 : 119,933.39 = 47,164.25 : x
  2. Step 2: Convert to fraction form
    86,908.25/119,933.39 = 47,164.25/x
  3. Step 3: Cross multiply
    86,908.25x = 119,933.39 × 47,164.25
  4. Step 4: Simplify right side
    86,908.25x = 5,656,568,389.31
  5. Step 5: Solve for x
    x = 5,656,568,389.31/86,908.25
  6. Step 6: Final answer
    x = 65,086.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.