Home / 68,690.22-102,857.90-47,408.63

Finding the Fourth Proportional to 68,690.22, 102,857.90 and 47,408.63

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Solution

The fourth proportional to 68,690.22, 102,857.90 and 47,408.63 is: 70,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,690.22 : 102,857.90 = 47,408.63 : x
  2. Step 2: Convert to fraction form
    68,690.22/102,857.90 = 47,408.63/x
  3. Step 3: Cross multiply
    68,690.22x = 102,857.90 × 47,408.63
  4. Step 4: Simplify right side
    68,690.22x = 4,876,351,372.34
  5. Step 5: Solve for x
    x = 4,876,351,372.34/68,690.22
  6. Step 6: Final answer
    x = 70,990.48

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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.