Home / 80,786.58-121,235.24-28,196.07

Finding the Fourth Proportional to 80,786.58, 121,235.24 and 28,196.07

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Solution

The fourth proportional to 80,786.58, 121,235.24 and 28,196.07 is: 42,313.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,786.58 : 121,235.24 = 28,196.07 : x
  2. Step 2: Convert to fraction form
    80,786.58/121,235.24 = 28,196.07/x
  3. Step 3: Cross multiply
    80,786.58x = 121,235.24 × 28,196.07
  4. Step 4: Simplify right side
    80,786.58x = 3,418,357,224.75
  5. Step 5: Solve for x
    x = 3,418,357,224.75/80,786.58
  6. Step 6: Final answer
    x = 42,313.43

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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.