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Finding the Fourth Proportional to 40,908.42, 61,318.44 and 19,803.87

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Solution

The fourth proportional to 40,908.42, 61,318.44 and 19,803.87 is: 29,684.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,908.42 : 61,318.44 = 19,803.87 : x
  2. Step 2: Convert to fraction form
    40,908.42/61,318.44 = 19,803.87/x
  3. Step 3: Cross multiply
    40,908.42x = 61,318.44 × 19,803.87
  4. Step 4: Simplify right side
    40,908.42x = 1,214,342,414.36
  5. Step 5: Solve for x
    x = 1,214,342,414.36/40,908.42
  6. Step 6: Final answer
    x = 29,684.41

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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.