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Finding the Fourth Proportional to 51,355.60, 77,040.60 and 20,183.60

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Solution

The fourth proportional to 51,355.60, 77,040.60 and 20,183.60 is: 30,278.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,355.60 : 77,040.60 = 20,183.60 : x
  2. Step 2: Convert to fraction form
    51,355.60/77,040.60 = 20,183.60/x
  3. Step 3: Cross multiply
    51,355.60x = 77,040.60 × 20,183.60
  4. Step 4: Simplify right side
    51,355.60x = 1,554,956,654.16
  5. Step 5: Solve for x
    x = 1,554,956,654.16/51,355.60
  6. Step 6: Final answer
    x = 30,278.23

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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.