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Finding the Fourth Proportional to 34,920, 48,198.24 and 21,499.92

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Solution

The fourth proportional to 34,920, 48,198.24 and 21,499.92 is: 29,675.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,920 : 48,198.24 = 21,499.92 : x
  2. Step 2: Convert to fraction form
    34,920/48,198.24 = 21,499.92/x
  3. Step 3: Cross multiply
    34,920x = 48,198.24 × 21,499.92
  4. Step 4: Simplify right side
    34,920x = 1,036,258,304.14
  5. Step 5: Solve for x
    x = 1,036,258,304.14/34,920
  6. Step 6: Final answer
    x = 29,675.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.