Home / 80,520.75-120,764.73-30,583.35

Finding the Fourth Proportional to 80,520.75, 120,764.73 and 30,583.35

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Solution

The fourth proportional to 80,520.75, 120,764.73 and 30,583.35 is: 45,868.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,520.75 : 120,764.73 = 30,583.35 : x
  2. Step 2: Convert to fraction form
    80,520.75/120,764.73 = 30,583.35/x
  3. Step 3: Cross multiply
    80,520.75x = 120,764.73 × 30,583.35
  4. Step 4: Simplify right side
    80,520.75x = 3,693,390,005.25
  5. Step 5: Solve for x
    x = 3,693,390,005.25/80,520.75
  6. Step 6: Final answer
    x = 45,868.80

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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.