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Finding the Fourth Proportional to 68,860, 103,307.28 and 19,612

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Solution

The fourth proportional to 68,860, 103,307.28 and 19,612 is: 29,422.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,860 : 103,307.28 = 19,612 : x
  2. Step 2: Convert to fraction form
    68,860/103,307.28 = 19,612/x
  3. Step 3: Cross multiply
    68,860x = 103,307.28 × 19,612
  4. Step 4: Simplify right side
    68,860x = 2,026,062,375.36
  5. Step 5: Solve for x
    x = 2,026,062,375.36/68,860
  6. Step 6: Final answer
    x = 29,422.92

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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.