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Finding the Fourth Proportional to 68,855.84, 103,287.60 and 19,604

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Solution

The fourth proportional to 68,855.84, 103,287.60 and 19,604 is: 29,407.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,855.84 : 103,287.60 = 19,604 : x
  2. Step 2: Convert to fraction form
    68,855.84/103,287.60 = 19,604/x
  3. Step 3: Cross multiply
    68,855.84x = 103,287.60 × 19,604
  4. Step 4: Simplify right side
    68,855.84x = 2,024,850,110.40
  5. Step 5: Solve for x
    x = 2,024,850,110.40/68,855.84
  6. Step 6: Final answer
    x = 29,407.09

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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.