Finding the Fourth Proportional to 67,170.84, 100,752.60 and 20,420.07
Calculator
Solution
The fourth proportional to 67,170.84, 100,752.60 and 20,420.07 is: 30,628.99
Step by Step Solution
- Step 1: Write the proportion equation
67,170.84 : 100,752.60 = 20,420.07 : x - Step 2: Convert to fraction form
67,170.84/100,752.60 = 20,420.07/x - Step 3: Cross multiply
67,170.84x = 100,752.60 × 20,420.07 - Step 4: Simplify right side
67,170.84x = 2,057,375,144.68 - Step 5: Solve for x
x = 2,057,375,144.68/67,170.84 - Step 6: Final answer
x = 30,628.99
Related Problems
Find fourth proportional to 33,585.42, 50,376.30 and 10,210.04
Half scale
Find fourth proportional to 134,341.68, 201,505.20 and 40,840.14
Double scale
Find fourth proportional to 67,171.84, 100,754.10 and 20,421.07
Similar ratio
Find fourth proportional to 100,756.26, 151,128.90 and 30,630.11
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.