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Finding the Fourth Proportional to 72,794, 109,074 and 61,130

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Solution

The fourth proportional to 72,794, 109,074 and 61,130 is: 91,596.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,794 : 109,074 = 61,130 : x
  2. Step 2: Convert to fraction form
    72,794/109,074 = 61,130/x
  3. Step 3: Cross multiply
    72,794x = 109,074 × 61,130
  4. Step 4: Simplify right side
    72,794x = 6,667,693,620
  5. Step 5: Solve for x
    x = 6,667,693,620/72,794
  6. Step 6: Final answer
    x = 91,596.75

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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.