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Finding the Fourth Proportional to 68,774.53, 103,161.80 and 45,395.50

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Solution

The fourth proportional to 68,774.53, 103,161.80 and 45,395.50 is: 68,093.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,774.53 : 103,161.80 = 45,395.50 : x
  2. Step 2: Convert to fraction form
    68,774.53/103,161.80 = 45,395.50/x
  3. Step 3: Cross multiply
    68,774.53x = 103,161.80 × 45,395.50
  4. Step 4: Simplify right side
    68,774.53x = 4,683,081,007.02
  5. Step 5: Solve for x
    x = 4,683,081,007.02/68,774.53
  6. Step 6: Final answer
    x = 68,093.25

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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.