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Finding the Fourth Proportional to 29,473.75, 40,661.75 and 18,139.82

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Solution

The fourth proportional to 29,473.75, 40,661.75 and 18,139.82 is: 25,025.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,473.75 : 40,661.75 = 18,139.82 : x
  2. Step 2: Convert to fraction form
    29,473.75/40,661.75 = 18,139.82/x
  3. Step 3: Cross multiply
    29,473.75x = 40,661.75 × 18,139.82
  4. Step 4: Simplify right side
    29,473.75x = 737,596,735.19
  5. Step 5: Solve for x
    x = 737,596,735.19/29,473.75
  6. Step 6: Final answer
    x = 25,025.55

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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.