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Finding the Fourth Proportional to 68,604, 102,911.76 and 19,356

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Solution

The fourth proportional to 68,604, 102,911.76 and 19,356 is: 29,035.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,604 : 102,911.76 = 19,356 : x
  2. Step 2: Convert to fraction form
    68,604/102,911.76 = 19,356/x
  3. Step 3: Cross multiply
    68,604x = 102,911.76 × 19,356
  4. Step 4: Simplify right side
    68,604x = 1,991,960,026.56
  5. Step 5: Solve for x
    x = 1,991,960,026.56/68,604
  6. Step 6: Final answer
    x = 29,035.63

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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.