Finding the Fourth Proportional to 70,990.44, 106,488.36 and 18,400.08
Calculator
Solution
The fourth proportional to 70,990.44, 106,488.36 and 18,400.08 is: 27,600.82
Step by Step Solution
- Step 1: Write the proportion equation
70,990.44 : 106,488.36 = 18,400.08 : x - Step 2: Convert to fraction form
70,990.44/106,488.36 = 18,400.08/x - Step 3: Cross multiply
70,990.44x = 106,488.36 × 18,400.08 - Step 4: Simplify right side
70,990.44x = 1,959,394,343.07 - Step 5: Solve for x
x = 1,959,394,343.07/70,990.44 - Step 6: Final answer
x = 27,600.82
Related Problems
Find fourth proportional to 35,495.22, 53,244.18 and 9,200.04
Half scale
Find fourth proportional to 141,980.88, 212,976.72 and 36,800.16
Double scale
Find fourth proportional to 70,991.44, 106,489.86 and 18,401.08
Similar ratio
Find fourth proportional to 106,485.66, 159,732.54 and 27,600.12
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.