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Finding the Fourth Proportional to 69,950.37, 104,894.69 and 20,019.11

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Solution

The fourth proportional to 69,950.37, 104,894.69 and 20,019.11 is: 30,019.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,950.37 : 104,894.69 = 20,019.11 : x
  2. Step 2: Convert to fraction form
    69,950.37/104,894.69 = 20,019.11/x
  3. Step 3: Cross multiply
    69,950.37x = 104,894.69 × 20,019.11
  4. Step 4: Simplify right side
    69,950.37x = 2,099,897,712.96
  5. Step 5: Solve for x
    x = 2,099,897,712.96/69,950.37
  6. Step 6: Final answer
    x = 30,019.82

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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.