Home / 77,185.71-115,762.37-21,768.75

Finding the Fourth Proportional to 77,185.71, 115,762.37 and 21,768.75

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Solution

The fourth proportional to 77,185.71, 115,762.37 and 21,768.75 is: 32,648.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,185.71 : 115,762.37 = 21,768.75 : x
  2. Step 2: Convert to fraction form
    77,185.71/115,762.37 = 21,768.75/x
  3. Step 3: Cross multiply
    77,185.71x = 115,762.37 × 21,768.75
  4. Step 4: Simplify right side
    77,185.71x = 2,520,001,983.09
  5. Step 5: Solve for x
    x = 2,520,001,983.09/77,185.71
  6. Step 6: Final answer
    x = 32,648.56

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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.