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Finding the Fourth Proportional to 72,272.42, 108,439.64 and 27,930.30

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Solution

The fourth proportional to 72,272.42, 108,439.64 and 27,930.30 is: 41,907.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,272.42 : 108,439.64 = 27,930.30 : x
  2. Step 2: Convert to fraction form
    72,272.42/108,439.64 = 27,930.30/x
  3. Step 3: Cross multiply
    72,272.42x = 108,439.64 × 27,930.30
  4. Step 4: Simplify right side
    72,272.42x = 3,028,751,537.44
  5. Step 5: Solve for x
    x = 3,028,751,537.44/72,272.42
  6. Step 6: Final answer
    x = 41,907.44

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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.