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Finding the Fourth Proportional to 34,679, 51,993.44 and 20,605.66

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Solution

The fourth proportional to 34,679, 51,993.44 and 20,605.66 is: 30,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,679 : 51,993.44 = 20,605.66 : x
  2. Step 2: Convert to fraction form
    34,679/51,993.44 = 20,605.66/x
  3. Step 3: Cross multiply
    34,679x = 51,993.44 × 20,605.66
  4. Step 4: Simplify right side
    34,679x = 1,071,359,146.87
  5. Step 5: Solve for x
    x = 1,071,359,146.87/34,679
  6. Step 6: Final answer
    x = 30,893.60

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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.