Home / 80,072.15-120,122.19-35,697.92

Finding the Fourth Proportional to 80,072.15, 120,122.19 and 35,697.92

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Solution

The fourth proportional to 80,072.15, 120,122.19 and 35,697.92 is: 53,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,072.15 : 120,122.19 = 35,697.92 : x
  2. Step 2: Convert to fraction form
    80,072.15/120,122.19 = 35,697.92/x
  3. Step 3: Cross multiply
    80,072.15x = 120,122.19 × 35,697.92
  4. Step 4: Simplify right side
    80,072.15x = 4,288,111,728.23
  5. Step 5: Solve for x
    x = 4,288,111,728.23/80,072.15
  6. Step 6: Final answer
    x = 53,553.10

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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.