Home / 81,076.22-121,608.32-28,486.22

Finding the Fourth Proportional to 81,076.22, 121,608.32 and 28,486.22

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Solution

The fourth proportional to 81,076.22, 121,608.32 and 28,486.22 is: 42,727.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,076.22 : 121,608.32 = 28,486.22 : x
  2. Step 2: Convert to fraction form
    81,076.22/121,608.32 = 28,486.22/x
  3. Step 3: Cross multiply
    81,076.22x = 121,608.32 × 28,486.22
  4. Step 4: Simplify right side
    81,076.22x = 3,464,161,357.35
  5. Step 5: Solve for x
    x = 3,464,161,357.35/81,076.22
  6. Step 6: Final answer
    x = 42,727.22

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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.