Home / 80,797.15-121,119.05-28,192.51

Finding the Fourth Proportional to 80,797.15, 121,119.05 and 28,192.51

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Solution

The fourth proportional to 80,797.15, 121,119.05 and 28,192.51 is: 42,262.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,797.15 : 121,119.05 = 28,192.51 : x
  2. Step 2: Convert to fraction form
    80,797.15/121,119.05 = 28,192.51/x
  3. Step 3: Cross multiply
    80,797.15x = 121,119.05 × 28,192.51
  4. Step 4: Simplify right side
    80,797.15x = 3,414,649,887.35
  5. Step 5: Solve for x
    x = 3,414,649,887.35/80,797.15
  6. Step 6: Final answer
    x = 42,262.01

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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.