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Finding the Fourth Proportional to 41,379, 62,019.88 and 19,145.40

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Solution

The fourth proportional to 41,379, 62,019.88 and 19,145.40 is: 28,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,379 : 62,019.88 = 19,145.40 : x
  2. Step 2: Convert to fraction form
    41,379/62,019.88 = 19,145.40/x
  3. Step 3: Cross multiply
    41,379x = 62,019.88 × 19,145.40
  4. Step 4: Simplify right side
    41,379x = 1,187,395,410.55
  5. Step 5: Solve for x
    x = 1,187,395,410.55/41,379
  6. Step 6: Final answer
    x = 28,695.60

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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.