Home / 66,161.07-99,247.07-21,188.99

Finding the Fourth Proportional to 66,161.07, 99,247.07 and 21,188.99

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Solution

The fourth proportional to 66,161.07, 99,247.07 and 21,188.99 is: 31,785.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,161.07 : 99,247.07 = 21,188.99 : x
  2. Step 2: Convert to fraction form
    66,161.07/99,247.07 = 21,188.99/x
  3. Step 3: Cross multiply
    66,161.07x = 99,247.07 × 21,188.99
  4. Step 4: Simplify right side
    66,161.07x = 2,102,945,474.85
  5. Step 5: Solve for x
    x = 2,102,945,474.85/66,161.07
  6. Step 6: Final answer
    x = 31,785.24

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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.