Finding the Fourth Proportional to 92,878.68, 128,175.12 and 54,640.92
Calculator
Solution
The fourth proportional to 92,878.68, 128,175.12 and 54,640.92 is: 75,405.96
Step by Step Solution
- Step 1: Write the proportion equation
92,878.68 : 128,175.12 = 54,640.92 : x - Step 2: Convert to fraction form
92,878.68/128,175.12 = 54,640.92/x - Step 3: Cross multiply
92,878.68x = 128,175.12 × 54,640.92 - Step 4: Simplify right side
92,878.68x = 7,003,606,477.91 - Step 5: Solve for x
x = 7,003,606,477.91/92,878.68 - Step 6: Final answer
x = 75,405.96
Related Problems
Find fourth proportional to 46,439.34, 64,087.56 and 27,320.46
Half scale
Find fourth proportional to 185,757.36, 256,350.24 and 109,281.84
Double scale
Find fourth proportional to 92,879.68, 128,176.50 and 54,641.92
Similar ratio
Find fourth proportional to 139,318.02, 192,262.68 and 81,961.38
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.