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Finding the Fourth Proportional to 68,771.60, 103,176.60 and 33,712.40

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Solution

The fourth proportional to 68,771.60, 103,176.60 and 33,712.40 is: 50,578.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,771.60 : 103,176.60 = 33,712.40 : x
  2. Step 2: Convert to fraction form
    68,771.60/103,176.60 = 33,712.40/x
  3. Step 3: Cross multiply
    68,771.60x = 103,176.60 × 33,712.40
  4. Step 4: Simplify right side
    68,771.60x = 3,478,330,809.84
  5. Step 5: Solve for x
    x = 3,478,330,809.84/68,771.60
  6. Step 6: Final answer
    x = 50,578.01

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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.