Home / 71,863.07-107,786.34-19,268.42

Finding the Fourth Proportional to 71,863.07, 107,786.34 and 19,268.42

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Solution

The fourth proportional to 71,863.07, 107,786.34 and 19,268.42 is: 28,900.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,863.07 : 107,786.34 = 19,268.42 : x
  2. Step 2: Convert to fraction form
    71,863.07/107,786.34 = 19,268.42/x
  3. Step 3: Cross multiply
    71,863.07x = 107,786.34 × 19,268.42
  4. Step 4: Simplify right side
    71,863.07x = 2,076,871,930.45
  5. Step 5: Solve for x
    x = 2,076,871,930.45/71,863.07
  6. Step 6: Final answer
    x = 28,900.41

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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.