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Finding the Fourth Proportional to 68,670.35, 103,043.79 and 37,079.74

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Solution

The fourth proportional to 68,670.35, 103,043.79 and 37,079.74 is: 55,640.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,670.35 : 103,043.79 = 37,079.74 : x
  2. Step 2: Convert to fraction form
    68,670.35/103,043.79 = 37,079.74/x
  3. Step 3: Cross multiply
    68,670.35x = 103,043.79 × 37,079.74
  4. Step 4: Simplify right side
    68,670.35x = 3,820,836,241.20
  5. Step 5: Solve for x
    x = 3,820,836,241.20/68,670.35
  6. Step 6: Final answer
    x = 55,640.27

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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.