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Finding the Fourth Proportional to 69,337.67, 103,990.44 and 19,421.29

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Solution

The fourth proportional to 69,337.67, 103,990.44 and 19,421.29 is: 29,127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,337.67 : 103,990.44 = 19,421.29 : x
  2. Step 2: Convert to fraction form
    69,337.67/103,990.44 = 19,421.29/x
  3. Step 3: Cross multiply
    69,337.67x = 103,990.44 × 19,421.29
  4. Step 4: Simplify right side
    69,337.67x = 2,019,627,972.52
  5. Step 5: Solve for x
    x = 2,019,627,972.52/69,337.67
  6. Step 6: Final answer
    x = 29,127.43

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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.