Home / 80,209.24-120,317.88-21,045.04

Finding the Fourth Proportional to 80,209.24, 120,317.88 and 21,045.04

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Solution

The fourth proportional to 80,209.24, 120,317.88 and 21,045.04 is: 31,568.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,209.24 : 120,317.88 = 21,045.04 : x
  2. Step 2: Convert to fraction form
    80,209.24/120,317.88 = 21,045.04/x
  3. Step 3: Cross multiply
    80,209.24x = 120,317.88 × 21,045.04
  4. Step 4: Simplify right side
    80,209.24x = 2,532,094,597.32
  5. Step 5: Solve for x
    x = 2,532,094,597.32/80,209.24
  6. Step 6: Final answer
    x = 31,568.61

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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.