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Finding the Fourth Proportional to 45,892.68, 68,839.77 and 12,612.54

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Solution

The fourth proportional to 45,892.68, 68,839.77 and 12,612.54 is: 18,919.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,892.68 : 68,839.77 = 12,612.54 : x
  2. Step 2: Convert to fraction form
    45,892.68/68,839.77 = 12,612.54/x
  3. Step 3: Cross multiply
    45,892.68x = 68,839.77 × 12,612.54
  4. Step 4: Simplify right side
    45,892.68x = 868,244,077.33
  5. Step 5: Solve for x
    x = 868,244,077.33/45,892.68
  6. Step 6: Final answer
    x = 18,919.01

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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.