Home / 81,494.88-122,212.26-28,173.36

Finding the Fourth Proportional to 81,494.88, 122,212.26 and 28,173.36

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Solution

The fourth proportional to 81,494.88, 122,212.26 and 28,173.36 is: 42,249.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,494.88 : 122,212.26 = 28,173.36 : x
  2. Step 2: Convert to fraction form
    81,494.88/122,212.26 = 28,173.36/x
  3. Step 3: Cross multiply
    81,494.88x = 122,212.26 × 28,173.36
  4. Step 4: Simplify right side
    81,494.88x = 3,443,129,997.39
  5. Step 5: Solve for x
    x = 3,443,129,997.39/81,494.88
  6. Step 6: Final answer
    x = 42,249.65

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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.