Home / 80,255.62-120,317.73-30,307.36

Finding the Fourth Proportional to 80,255.62, 120,317.73 and 30,307.36

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Solution

The fourth proportional to 80,255.62, 120,317.73 and 30,307.36 is: 45,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,255.62 : 120,317.73 = 30,307.36 : x
  2. Step 2: Convert to fraction form
    80,255.62/120,317.73 = 30,307.36/x
  3. Step 3: Cross multiply
    80,255.62x = 120,317.73 × 30,307.36
  4. Step 4: Simplify right side
    80,255.62x = 3,646,512,757.49
  5. Step 5: Solve for x
    x = 3,646,512,757.49/80,255.62
  6. Step 6: Final answer
    x = 45,436.23

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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.