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Finding the Fourth Proportional to 72,646.80, 109,002.60 and 33,183.60

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Solution

The fourth proportional to 72,646.80, 109,002.60 and 33,183.60 is: 49,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,646.80 : 109,002.60 = 33,183.60 : x
  2. Step 2: Convert to fraction form
    72,646.80/109,002.60 = 33,183.60/x
  3. Step 3: Cross multiply
    72,646.80x = 109,002.60 × 33,183.60
  4. Step 4: Simplify right side
    72,646.80x = 3,617,098,677.36
  5. Step 5: Solve for x
    x = 3,617,098,677.36/72,646.80
  6. Step 6: Final answer
    x = 49,790.20

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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.