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Finding the Fourth Proportional to 68,416.85, 102,610.62 and 39,934.82

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Solution

The fourth proportional to 68,416.85, 102,610.62 and 39,934.82 is: 59,893.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,416.85 : 102,610.62 = 39,934.82 : x
  2. Step 2: Convert to fraction form
    68,416.85/102,610.62 = 39,934.82/x
  3. Step 3: Cross multiply
    68,416.85x = 102,610.62 × 39,934.82
  4. Step 4: Simplify right side
    68,416.85x = 4,097,736,126.74
  5. Step 5: Solve for x
    x = 4,097,736,126.74/68,416.85
  6. Step 6: Final answer
    x = 59,893.67

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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.