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Finding the Fourth Proportional to 68,776.90, 103,398.63 and 54,914.02

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Solution

The fourth proportional to 68,776.90, 103,398.63 and 54,914.02 is: 82,557.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,776.90 : 103,398.63 = 54,914.02 : x
  2. Step 2: Convert to fraction form
    68,776.90/103,398.63 = 54,914.02/x
  3. Step 3: Cross multiply
    68,776.90x = 103,398.63 × 54,914.02
  4. Step 4: Simplify right side
    68,776.90x = 5,678,034,435.79
  5. Step 5: Solve for x
    x = 5,678,034,435.79/68,776.90
  6. Step 6: Final answer
    x = 82,557.29

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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.