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Finding the Fourth Proportional to 48,661.70, 72,951.99 and 20,603.30

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Solution

The fourth proportional to 48,661.70, 72,951.99 and 20,603.30 is: 30,887.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,661.70 : 72,951.99 = 20,603.30 : x
  2. Step 2: Convert to fraction form
    48,661.70/72,951.99 = 20,603.30/x
  3. Step 3: Cross multiply
    48,661.70x = 72,951.99 × 20,603.30
  4. Step 4: Simplify right side
    48,661.70x = 1,503,051,735.57
  5. Step 5: Solve for x
    x = 1,503,051,735.57/48,661.70
  6. Step 6: Final answer
    x = 30,887.78

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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.