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Finding the Fourth Proportional to 74,137.53, 102,334.74 and 45,065.79

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Solution

The fourth proportional to 74,137.53, 102,334.74 and 45,065.79 is: 62,205.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,137.53 : 102,334.74 = 45,065.79 : x
  2. Step 2: Convert to fraction form
    74,137.53/102,334.74 = 45,065.79/x
  3. Step 3: Cross multiply
    74,137.53x = 102,334.74 × 45,065.79
  4. Step 4: Simplify right side
    74,137.53x = 4,611,795,902.54
  5. Step 5: Solve for x
    x = 4,611,795,902.54/74,137.53
  6. Step 6: Final answer
    x = 62,205.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.