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Finding the Fourth Proportional to 80,399.04, 120,596.10 and 21,235.04

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Solution

The fourth proportional to 80,399.04, 120,596.10 and 21,235.04 is: 31,851.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,399.04 : 120,596.10 = 21,235.04 : x
  2. Step 2: Convert to fraction form
    80,399.04/120,596.10 = 21,235.04/x
  3. Step 3: Cross multiply
    80,399.04x = 120,596.10 × 21,235.04
  4. Step 4: Simplify right side
    80,399.04x = 2,560,863,007.34
  5. Step 5: Solve for x
    x = 2,560,863,007.34/80,399.04
  6. Step 6: Final answer
    x = 31,851.91

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1.5x scale

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.