Finding the Third Proportional to 30,990 and 66,948
Calculator
Solution
The third proportional to 30,990 and 66,948 is: 144,628.42
Step by Step Solution
- Step 1: Write the proportion equation
30,990 : 66,948 = 66,948 : x - Step 2: Convert to fraction form
30,990/66,948 = 66,948/x - Step 3: Cross multiply
30,990x = 66,948 × 66,948 - Step 4: Simplify right side
30,990x = 4,482,034,704 - Step 5: Solve for x
x = 4,482,034,704/30,990 - Step 6: Final answer
x = 144,628.42
Related Problems
Find third proportional to 15,495 and 33,474
Half scale
Find third proportional to 61,980 and 133,896
Double scale
Find third proportional to 30,992 and 66,952
Similar ratio
Find third proportional to 46,485 and 100,422
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.