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Finding the Fourth Proportional to 68,109.90, 102,189.45 and 34,845.63

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Solution

The fourth proportional to 68,109.90, 102,189.45 and 34,845.63 is: 52,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,109.90 : 102,189.45 = 34,845.63 : x
  2. Step 2: Convert to fraction form
    68,109.90/102,189.45 = 34,845.63/x
  3. Step 3: Cross multiply
    68,109.90x = 102,189.45 × 34,845.63
  4. Step 4: Simplify right side
    68,109.90x = 3,560,855,764.60
  5. Step 5: Solve for x
    x = 3,560,855,764.60/68,109.90
  6. Step 6: Final answer
    x = 52,281.03

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1.5x scale

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.