Finding the Fourth Proportional to 70,138.44, 105,207.48 and 57,776.76
Calculator
Solution
The fourth proportional to 70,138.44, 105,207.48 and 57,776.76 is: 86,664.99
Step by Step Solution
- Step 1: Write the proportion equation
70,138.44 : 105,207.48 = 57,776.76 : x - Step 2: Convert to fraction form
70,138.44/105,207.48 = 57,776.76/x - Step 3: Cross multiply
70,138.44x = 105,207.48 × 57,776.76 - Step 4: Simplify right side
70,138.44x = 6,078,547,322.16 - Step 5: Solve for x
x = 6,078,547,322.16/70,138.44 - Step 6: Final answer
x = 86,664.99
Related Problems
Find fourth proportional to 35,069.22, 52,603.74 and 28,888.38
Half scale
Find fourth proportional to 140,276.88, 210,414.96 and 115,553.52
Double scale
Find fourth proportional to 70,139.44, 105,208.98 and 57,777.76
Similar ratio
Find fourth proportional to 105,207.66, 157,811.22 and 86,665.14
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.