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Finding the Fourth Proportional to 80,590, 120,889.32 and 25,190.32

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Solution

The fourth proportional to 80,590, 120,889.32 and 25,190.32 is: 37,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,590 : 120,889.32 = 25,190.32 : x
  2. Step 2: Convert to fraction form
    80,590/120,889.32 = 25,190.32/x
  3. Step 3: Cross multiply
    80,590x = 120,889.32 × 25,190.32
  4. Step 4: Simplify right side
    80,590x = 3,045,240,655.38
  5. Step 5: Solve for x
    x = 3,045,240,655.38/80,590
  6. Step 6: Final answer
    x = 37,786.83

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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.