Home / 77,195.27-115,776.68-21,778.31

Finding the Fourth Proportional to 77,195.27, 115,776.68 and 21,778.31

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Solution

The fourth proportional to 77,195.27, 115,776.68 and 21,778.31 is: 32,662.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,195.27 : 115,776.68 = 21,778.31 : x
  2. Step 2: Convert to fraction form
    77,195.27/115,776.68 = 21,778.31/x
  3. Step 3: Cross multiply
    77,195.27x = 115,776.68 × 21,778.31
  4. Step 4: Simplify right side
    77,195.27x = 2,521,420,608.36
  5. Step 5: Solve for x
    x = 2,521,420,608.36/77,195.27
  6. Step 6: Final answer
    x = 32,662.89

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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.