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Finding the Fourth Proportional to 30,808.73, 46,212.42 and 8,621.66

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Solution

The fourth proportional to 30,808.73, 46,212.42 and 8,621.66 is: 12,932.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.73 : 46,212.42 = 8,621.66 : x
  2. Step 2: Convert to fraction form
    30,808.73/46,212.42 = 8,621.66/x
  3. Step 3: Cross multiply
    30,808.73x = 46,212.42 × 8,621.66
  4. Step 4: Simplify right side
    30,808.73x = 398,427,773.02
  5. Step 5: Solve for x
    x = 398,427,773.02/30,808.73
  6. Step 6: Final answer
    x = 12,932.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.