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Finding the Fourth Proportional to 68,612.20, 103,091.10 and 43,664.20

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Solution

The fourth proportional to 68,612.20, 103,091.10 and 43,664.20 is: 65,606.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,612.20 : 103,091.10 = 43,664.20 : x
  2. Step 2: Convert to fraction form
    68,612.20/103,091.10 = 43,664.20/x
  3. Step 3: Cross multiply
    68,612.20x = 103,091.10 × 43,664.20
  4. Step 4: Simplify right side
    68,612.20x = 4,501,390,408.62
  5. Step 5: Solve for x
    x = 4,501,390,408.62/68,612.20
  6. Step 6: Final answer
    x = 65,606.27

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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.