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Finding the Fourth Proportional to 68,908.50, 103,387.32 and 33,872.76

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Solution

The fourth proportional to 68,908.50, 103,387.32 and 33,872.76 is: 50,821.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,908.50 : 103,387.32 = 33,872.76 : x
  2. Step 2: Convert to fraction form
    68,908.50/103,387.32 = 33,872.76/x
  3. Step 3: Cross multiply
    68,908.50x = 103,387.32 × 33,872.76
  4. Step 4: Simplify right side
    68,908.50x = 3,502,013,877.40
  5. Step 5: Solve for x
    x = 3,502,013,877.40/68,908.50
  6. Step 6: Final answer
    x = 50,821.22

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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.