Home / 80,454,845.15-120,682,267.73-72,392,688.35

Finding the Fourth Proportional to 80,454,845.15, 120,682,267.73 and 72,392,688.35

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Solution

The fourth proportional to 80,454,845.15, 120,682,267.73 and 72,392,688.35 is: 108,589,032.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,845.15 : 120,682,267.73 = 72,392,688.35 : x
  2. Step 2: Convert to fraction form
    80,454,845.15/120,682,267.73 = 72,392,688.35/x
  3. Step 3: Cross multiply
    80,454,845.15x = 120,682,267.73 × 72,392,688.35
  4. Step 4: Simplify right side
    80,454,845.15x = 8,736,513,797,149,152
  5. Step 5: Solve for x
    x = 8,736,513,797,149,152/80,454,845.15
  6. Step 6: Final answer
    x = 108,589,032.53

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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.