Home / 80,045.75-120,068.62-30,137.04

Finding the Fourth Proportional to 80,045.75, 120,068.62 and 30,137.04

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Solution

The fourth proportional to 80,045.75, 120,068.62 and 30,137.04 is: 45,205.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,045.75 : 120,068.62 = 30,137.04 : x
  2. Step 2: Convert to fraction form
    80,045.75/120,068.62 = 30,137.04/x
  3. Step 3: Cross multiply
    80,045.75x = 120,068.62 × 30,137.04
  4. Step 4: Simplify right side
    80,045.75x = 3,618,512,813.10
  5. Step 5: Solve for x
    x = 3,618,512,813.10/80,045.75
  6. Step 6: Final answer
    x = 45,205.56

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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.