Home / 80,289.77-120,545.22-40,874.36

Finding the Fourth Proportional to 80,289.77, 120,545.22 and 40,874.36

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Solution

The fourth proportional to 80,289.77, 120,545.22 and 40,874.36 is: 61,367.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,289.77 : 120,545.22 = 40,874.36 : x
  2. Step 2: Convert to fraction form
    80,289.77/120,545.22 = 40,874.36/x
  3. Step 3: Cross multiply
    80,289.77x = 120,545.22 × 40,874.36
  4. Step 4: Simplify right side
    80,289.77x = 4,927,208,718.56
  5. Step 5: Solve for x
    x = 4,927,208,718.56/80,289.77
  6. Step 6: Final answer
    x = 61,367.83

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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.