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Finding the Fourth Proportional to 48,191, 66,544.62 and 30,315.92

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Solution

The fourth proportional to 48,191, 66,544.62 and 30,315.92 is: 41,861.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,191 : 66,544.62 = 30,315.92 : x
  2. Step 2: Convert to fraction form
    48,191/66,544.62 = 30,315.92/x
  3. Step 3: Cross multiply
    48,191x = 66,544.62 × 30,315.92
  4. Step 4: Simplify right side
    48,191x = 2,017,361,376.35
  5. Step 5: Solve for x
    x = 2,017,361,376.35/48,191
  6. Step 6: Final answer
    x = 41,861.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.