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Finding the Fourth Proportional to 75,015, 112,523.58 and 19,611

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Solution

The fourth proportional to 75,015, 112,523.58 and 19,611 is: 29,416.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,015 : 112,523.58 = 19,611 : x
  2. Step 2: Convert to fraction form
    75,015/112,523.58 = 19,611/x
  3. Step 3: Cross multiply
    75,015x = 112,523.58 × 19,611
  4. Step 4: Simplify right side
    75,015x = 2,206,699,927.38
  5. Step 5: Solve for x
    x = 2,206,699,927.38/75,015
  6. Step 6: Final answer
    x = 29,416.78

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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.