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Finding the Fourth Proportional to 48,706.20, 73,018.80 and 20,647.80

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Solution

The fourth proportional to 48,706.20, 73,018.80 and 20,647.80 is: 30,954.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,706.20 : 73,018.80 = 20,647.80 : x
  2. Step 2: Convert to fraction form
    48,706.20/73,018.80 = 20,647.80/x
  3. Step 3: Cross multiply
    48,706.20x = 73,018.80 × 20,647.80
  4. Step 4: Simplify right side
    48,706.20x = 1,507,677,578.64
  5. Step 5: Solve for x
    x = 1,507,677,578.64/48,706.20
  6. Step 6: Final answer
    x = 30,954.53

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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.