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Finding the Fourth Proportional to 45,348, 68,028.12 and 14,185.68

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Solution

The fourth proportional to 45,348, 68,028.12 and 14,185.68 is: 21,280.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,348 : 68,028.12 = 14,185.68 : x
  2. Step 2: Convert to fraction form
    45,348/68,028.12 = 14,185.68/x
  3. Step 3: Cross multiply
    45,348x = 68,028.12 × 14,185.68
  4. Step 4: Simplify right side
    45,348x = 965,025,141.32
  5. Step 5: Solve for x
    x = 965,025,141.32/45,348
  6. Step 6: Final answer
    x = 21,280.43

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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.