Home / 80,239.23-120,273.51-30,298.08

Finding the Fourth Proportional to 80,239.23, 120,273.51 and 30,298.08

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Solution

The fourth proportional to 80,239.23, 120,273.51 and 30,298.08 is: 45,414.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,239.23 : 120,273.51 = 30,298.08 : x
  2. Step 2: Convert to fraction form
    80,239.23/120,273.51 = 30,298.08/x
  3. Step 3: Cross multiply
    80,239.23x = 120,273.51 × 30,298.08
  4. Step 4: Simplify right side
    80,239.23x = 3,644,056,427.86
  5. Step 5: Solve for x
    x = 3,644,056,427.86/80,239.23
  6. Step 6: Final answer
    x = 45,414.90

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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.