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Finding the Fourth Proportional to 39,843.60, 59,765.40 and 33,428.40

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Solution

The fourth proportional to 39,843.60, 59,765.40 and 33,428.40 is: 50,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,843.60 : 59,765.40 = 33,428.40 : x
  2. Step 2: Convert to fraction form
    39,843.60/59,765.40 = 33,428.40/x
  3. Step 3: Cross multiply
    39,843.60x = 59,765.40 × 33,428.40
  4. Step 4: Simplify right side
    39,843.60x = 1,997,861,697.36
  5. Step 5: Solve for x
    x = 1,997,861,697.36/39,843.60
  6. Step 6: Final answer
    x = 50,142.60

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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.