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Finding the Fourth Proportional to 45,903.60, 68,860.62 and 19,611

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Solution

The fourth proportional to 45,903.60, 68,860.62 and 19,611 is: 29,418.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,903.60 : 68,860.62 = 19,611 : x
  2. Step 2: Convert to fraction form
    45,903.60/68,860.62 = 19,611/x
  3. Step 3: Cross multiply
    45,903.60x = 68,860.62 × 19,611
  4. Step 4: Simplify right side
    45,903.60x = 1,350,425,618.82
  5. Step 5: Solve for x
    x = 1,350,425,618.82/45,903.60
  6. Step 6: Final answer
    x = 29,418.73

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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.