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Finding the Fourth Proportional to 71,993.74, 99,351.08 and 40,162.62

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Solution

The fourth proportional to 71,993.74, 99,351.08 and 40,162.62 is: 55,424.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,993.74 : 99,351.08 = 40,162.62 : x
  2. Step 2: Convert to fraction form
    71,993.74/99,351.08 = 40,162.62/x
  3. Step 3: Cross multiply
    71,993.74x = 99,351.08 × 40,162.62
  4. Step 4: Simplify right side
    71,993.74x = 3,990,199,672.63
  5. Step 5: Solve for x
    x = 3,990,199,672.63/71,993.74
  6. Step 6: Final answer
    x = 55,424.26

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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.