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Finding the Fourth Proportional to 72,212.08, 108,244.20 and 27,821.40

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Solution

The fourth proportional to 72,212.08, 108,244.20 and 27,821.40 is: 41,703.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,212.08 : 108,244.20 = 27,821.40 : x
  2. Step 2: Convert to fraction form
    72,212.08/108,244.20 = 27,821.40/x
  3. Step 3: Cross multiply
    72,212.08x = 108,244.20 × 27,821.40
  4. Step 4: Simplify right side
    72,212.08x = 3,011,505,185.88
  5. Step 5: Solve for x
    x = 3,011,505,185.88/72,212.08
  6. Step 6: Final answer
    x = 41,703.62

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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.