Home / 80,921.82-121,298.46-45,330.96

Finding the Fourth Proportional to 80,921.82, 121,298.46 and 45,330.96

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Solution

The fourth proportional to 80,921.82, 121,298.46 and 45,330.96 is: 67,949.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,921.82 : 121,298.46 = 45,330.96 : x
  2. Step 2: Convert to fraction form
    80,921.82/121,298.46 = 45,330.96/x
  3. Step 3: Cross multiply
    80,921.82x = 121,298.46 × 45,330.96
  4. Step 4: Simplify right side
    80,921.82x = 5,498,575,638.32
  5. Step 5: Solve for x
    x = 5,498,575,638.32/80,921.82
  6. Step 6: Final answer
    x = 67,949.23

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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.