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Finding the Fourth Proportional to 51,380.73, 77,055.30 and 19,788.30

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Solution

The fourth proportional to 51,380.73, 77,055.30 and 19,788.30 is: 29,676.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,380.73 : 77,055.30 = 19,788.30 : x
  2. Step 2: Convert to fraction form
    51,380.73/77,055.30 = 19,788.30/x
  3. Step 3: Cross multiply
    51,380.73x = 77,055.30 × 19,788.30
  4. Step 4: Simplify right side
    51,380.73x = 1,524,793,392.99
  5. Step 5: Solve for x
    x = 1,524,793,392.99/51,380.73
  6. Step 6: Final answer
    x = 29,676.37

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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.