Home / 30,028-45,139.20-27,863.68

Finding the Fourth Proportional to 30,028, 45,139.20 and 27,863.68

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Solution

The fourth proportional to 30,028, 45,139.20 and 27,863.68 is: 41,885.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,028 : 45,139.20 = 27,863.68 : x
  2. Step 2: Convert to fraction form
    30,028/45,139.20 = 27,863.68/x
  3. Step 3: Cross multiply
    30,028x = 45,139.20 × 27,863.68
  4. Step 4: Simplify right side
    30,028x = 1,257,744,224.26
  5. Step 5: Solve for x
    x = 1,257,744,224.26/30,028
  6. Step 6: Final answer
    x = 41,885.71

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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.