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Finding the Fourth Proportional to 72,612.20, 108,845.40 and 33,197.60

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Solution

The fourth proportional to 72,612.20, 108,845.40 and 33,197.60 is: 49,763.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,612.20 : 108,845.40 = 33,197.60 : x
  2. Step 2: Convert to fraction form
    72,612.20/108,845.40 = 33,197.60/x
  3. Step 3: Cross multiply
    72,612.20x = 108,845.40 × 33,197.60
  4. Step 4: Simplify right side
    72,612.20x = 3,613,406,051.04
  5. Step 5: Solve for x
    x = 3,613,406,051.04/72,612.20
  6. Step 6: Final answer
    x = 49,763.07

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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.