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Finding the Fourth Proportional to 71,209.95, 98,279.51 and 40,994.61

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Solution

The fourth proportional to 71,209.95, 98,279.51 and 40,994.61 is: 56,578.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,209.95 : 98,279.51 = 40,994.61 : x
  2. Step 2: Convert to fraction form
    71,209.95/98,279.51 = 40,994.61/x
  3. Step 3: Cross multiply
    71,209.95x = 98,279.51 × 40,994.61
  4. Step 4: Simplify right side
    71,209.95x = 4,028,930,183.44
  5. Step 5: Solve for x
    x = 4,028,930,183.44/71,209.95
  6. Step 6: Final answer
    x = 56,578.19

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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.