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Finding the Fourth Proportional to 66,163.07, 99,250.07 and 21,190.99

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Solution

The fourth proportional to 66,163.07, 99,250.07 and 21,190.99 is: 31,788.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,163.07 : 99,250.07 = 21,190.99 : x
  2. Step 2: Convert to fraction form
    66,163.07/99,250.07 = 21,190.99/x
  3. Step 3: Cross multiply
    66,163.07x = 99,250.07 × 21,190.99
  4. Step 4: Simplify right side
    66,163.07x = 2,103,207,240.87
  5. Step 5: Solve for x
    x = 2,103,207,240.87/66,163.07
  6. Step 6: Final answer
    x = 31,788.24

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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.