Finding the Fourth Proportional to 80,812.87, 121,208.36 and 21,649.05
Calculator
Solution
The fourth proportional to 80,812.87, 121,208.36 and 21,649.05 is: 32,470.64
Step by Step Solution
- Step 1: Write the proportion equation
80,812.87 : 121,208.36 = 21,649.05 : x - Step 2: Convert to fraction form
80,812.87/121,208.36 = 21,649.05/x - Step 3: Cross multiply
80,812.87x = 121,208.36 × 21,649.05 - Step 4: Simplify right side
80,812.87x = 2,624,045,846.06 - Step 5: Solve for x
x = 2,624,045,846.06/80,812.87 - Step 6: Final answer
x = 32,470.64
Related Problems
Find fourth proportional to 40,406.44, 60,604.18 and 10,824.53
Half scale
Find fourth proportional to 161,625.74, 242,416.72 and 43,298.10
Double scale
Find fourth proportional to 80,813.87, 121,209.86 and 21,650.05
Similar ratio
Find fourth proportional to 121,219.31, 181,812.54 and 32,473.58
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.