Home / 80,705.97-121,057.54-28,114.09

Finding the Fourth Proportional to 80,705.97, 121,057.54 and 28,114.09

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Solution

The fourth proportional to 80,705.97, 121,057.54 and 28,114.09 is: 42,170.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,705.97 : 121,057.54 = 28,114.09 : x
  2. Step 2: Convert to fraction form
    80,705.97/121,057.54 = 28,114.09/x
  3. Step 3: Cross multiply
    80,705.97x = 121,057.54 × 28,114.09
  4. Step 4: Simplify right side
    80,705.97x = 3,403,422,201.81
  5. Step 5: Solve for x
    x = 3,403,422,201.81/80,705.97
  6. Step 6: Final answer
    x = 42,170.64

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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.