Home / 80,545.37-120,823.32-21,379.46

Finding the Fourth Proportional to 80,545.37, 120,823.32 and 21,379.46

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Solution

The fourth proportional to 80,545.37, 120,823.32 and 21,379.46 is: 32,070.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,545.37 : 120,823.32 = 21,379.46 : x
  2. Step 2: Convert to fraction form
    80,545.37/120,823.32 = 21,379.46/x
  3. Step 3: Cross multiply
    80,545.37x = 120,823.32 × 21,379.46
  4. Step 4: Simplify right side
    80,545.37x = 2,583,137,337.01
  5. Step 5: Solve for x
    x = 2,583,137,337.01/80,545.37
  6. Step 6: Final answer
    x = 32,070.59

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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.