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Finding the Fourth Proportional to 68,995, 103,492.52 and 19,747

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Solution

The fourth proportional to 68,995, 103,492.52 and 19,747 is: 29,620.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,995 : 103,492.52 = 19,747 : x
  2. Step 2: Convert to fraction form
    68,995/103,492.52 = 19,747/x
  3. Step 3: Cross multiply
    68,995x = 103,492.52 × 19,747
  4. Step 4: Simplify right side
    68,995x = 2,043,666,792.44
  5. Step 5: Solve for x
    x = 2,043,666,792.44/68,995
  6. Step 6: Final answer
    x = 29,620.51

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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.