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Finding the Fourth Proportional to 61,900.96, 92,850.38 and 19,780.73

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Solution

The fourth proportional to 61,900.96, 92,850.38 and 19,780.73 is: 29,670.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,900.96 : 92,850.38 = 19,780.73 : x
  2. Step 2: Convert to fraction form
    61,900.96/92,850.38 = 19,780.73/x
  3. Step 3: Cross multiply
    61,900.96x = 92,850.38 × 19,780.73
  4. Step 4: Simplify right side
    61,900.96x = 1,836,648,198.27
  5. Step 5: Solve for x
    x = 1,836,648,198.27/61,900.96
  6. Step 6: Final answer
    x = 29,670.76

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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.