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Finding the Fourth Proportional to 68,359.80, 102,553.38 and 28,916.76

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Solution

The fourth proportional to 68,359.80, 102,553.38 and 28,916.76 is: 43,380.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,359.80 : 102,553.38 = 28,916.76 : x
  2. Step 2: Convert to fraction form
    68,359.80/102,553.38 = 28,916.76/x
  3. Step 3: Cross multiply
    68,359.80x = 102,553.38 × 28,916.76
  4. Step 4: Simplify right side
    68,359.80x = 2,965,511,476.65
  5. Step 5: Solve for x
    x = 2,965,511,476.65/68,359.80
  6. Step 6: Final answer
    x = 43,380.93

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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.