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Finding the Fourth Proportional to 66,260.75, 99,369.93 and 21,879.23

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Solution

The fourth proportional to 66,260.75, 99,369.93 and 21,879.23 is: 32,811.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,260.75 : 99,369.93 = 21,879.23 : x
  2. Step 2: Convert to fraction form
    66,260.75/99,369.93 = 21,879.23/x
  3. Step 3: Cross multiply
    66,260.75x = 99,369.93 × 21,879.23
  4. Step 4: Simplify right side
    66,260.75x = 2,174,137,195.73
  5. Step 5: Solve for x
    x = 2,174,137,195.73/66,260.75
  6. Step 6: Final answer
    x = 32,811.84

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1.5x scale

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.