Home / 71,428.20-98,568.30-41,214.78

Finding the Fourth Proportional to 71,428.20, 98,568.30 and 41,214.78

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Solution

The fourth proportional to 71,428.20, 98,568.30 and 41,214.78 is: 56,874.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,428.20 : 98,568.30 = 41,214.78 : x
  2. Step 2: Convert to fraction form
    71,428.20/98,568.30 = 41,214.78/x
  3. Step 3: Cross multiply
    71,428.20x = 98,568.30 × 41,214.78
  4. Step 4: Simplify right side
    71,428.20x = 4,062,470,799.47
  5. Step 5: Solve for x
    x = 4,062,470,799.47/71,428.20
  6. Step 6: Final answer
    x = 56,874.89

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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.