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Finding the Fourth Proportional to 68,735.61, 103,103.46 and 18,816.12

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Solution

The fourth proportional to 68,735.61, 103,103.46 and 18,816.12 is: 28,224.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,735.61 : 103,103.46 = 18,816.12 : x
  2. Step 2: Convert to fraction form
    68,735.61/103,103.46 = 18,816.12/x
  3. Step 3: Cross multiply
    68,735.61x = 103,103.46 × 18,816.12
  4. Step 4: Simplify right side
    68,735.61x = 1,940,007,075.78
  5. Step 5: Solve for x
    x = 1,940,007,075.78/68,735.61
  6. Step 6: Final answer
    x = 28,224.19

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1.5x scale

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.