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Finding the Fourth Proportional to 43,107.68, 64,662.60 and 11,942.84

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Solution

The fourth proportional to 43,107.68, 64,662.60 and 11,942.84 is: 17,914.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,107.68 : 64,662.60 = 11,942.84 : x
  2. Step 2: Convert to fraction form
    43,107.68/64,662.60 = 11,942.84/x
  3. Step 3: Cross multiply
    43,107.68x = 64,662.60 × 11,942.84
  4. Step 4: Simplify right side
    43,107.68x = 772,255,085.78
  5. Step 5: Solve for x
    x = 772,255,085.78/43,107.68
  6. Step 6: Final answer
    x = 17,914.56

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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.