Home / 80,101,561.72-120,156,994.68-30,917,695.96

Finding the Fourth Proportional to 80,101,561.72, 120,156,994.68 and 30,917,695.96

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Solution

The fourth proportional to 80,101,561.72, 120,156,994.68 and 30,917,695.96 is: 46,378,339.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,101,561.72 : 120,156,994.68 = 30,917,695.96 : x
  2. Step 2: Convert to fraction form
    80,101,561.72/120,156,994.68 = 30,917,695.96/x
  3. Step 3: Cross multiply
    80,101,561.72x = 120,156,994.68 × 30,917,695.96
  4. Step 4: Simplify right side
    80,101,561.72x = 3,714,977,428,983,578
  5. Step 5: Solve for x
    x = 3,714,977,428,983,578/80,101,561.72
  6. Step 6: Final answer
    x = 46,378,339.56

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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.