Home / 80,750.27-121,133.48-30,872.34

Finding the Fourth Proportional to 80,750.27, 121,133.48 and 30,872.34

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Solution

The fourth proportional to 80,750.27, 121,133.48 and 30,872.34 is: 46,311.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,750.27 : 121,133.48 = 30,872.34 : x
  2. Step 2: Convert to fraction form
    80,750.27/121,133.48 = 30,872.34/x
  3. Step 3: Cross multiply
    80,750.27x = 121,133.48 × 30,872.34
  4. Step 4: Simplify right side
    80,750.27x = 3,739,673,825.58
  5. Step 5: Solve for x
    x = 3,739,673,825.58/80,750.27
  6. Step 6: Final answer
    x = 46,311.59

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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.