Home / 80,914.14-121,344.97-30,991.58

Finding the Fourth Proportional to 80,914.14, 121,344.97 and 30,991.58

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Solution

The fourth proportional to 80,914.14, 121,344.97 and 30,991.58 is: 46,477.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,914.14 : 121,344.97 = 30,991.58 : x
  2. Step 2: Convert to fraction form
    80,914.14/121,344.97 = 30,991.58/x
  3. Step 3: Cross multiply
    80,914.14x = 121,344.97 × 30,991.58
  4. Step 4: Simplify right side
    80,914.14x = 3,760,672,345.35
  5. Step 5: Solve for x
    x = 3,760,672,345.35/80,914.14
  6. Step 6: Final answer
    x = 46,477.32

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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.