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Finding the Fourth Proportional to 80,571.78, 120,839.45 and 30,634.07

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Solution

The fourth proportional to 80,571.78, 120,839.45 and 30,634.07 is: 45,944.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,571.78 : 120,839.45 = 30,634.07 : x
  2. Step 2: Convert to fraction form
    80,571.78/120,839.45 = 30,634.07/x
  3. Step 3: Cross multiply
    80,571.78x = 120,839.45 × 30,634.07
  4. Step 4: Simplify right side
    80,571.78x = 3,701,803,412.69
  5. Step 5: Solve for x
    x = 3,701,803,412.69/80,571.78
  6. Step 6: Final answer
    x = 45,944.17

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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.