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Finding the Fourth Proportional to 38,369.70, 57,477.92 and 30,485.57

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Solution

The fourth proportional to 38,369.70, 57,477.92 and 30,485.57 is: 45,667.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,369.70 : 57,477.92 = 30,485.57 : x
  2. Step 2: Convert to fraction form
    38,369.70/57,477.92 = 30,485.57/x
  3. Step 3: Cross multiply
    38,369.70x = 57,477.92 × 30,485.57
  4. Step 4: Simplify right side
    38,369.70x = 1,752,246,713.80
  5. Step 5: Solve for x
    x = 1,752,246,713.80/38,369.70
  6. Step 6: Final answer
    x = 45,667.46

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.