Finding the Fourth Proportional to 81,074.10, 121,611.56 and 36,648.84
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Solution
The fourth proportional to 81,074.10, 121,611.56 and 36,648.84 is: 54,973.45
Step by Step Solution
- Step 1: Write the proportion equation
81,074.10 : 121,611.56 = 36,648.84 : x - Step 2: Convert to fraction form
81,074.10/121,611.56 = 36,648.84/x - Step 3: Cross multiply
81,074.10x = 121,611.56 × 36,648.84 - Step 4: Simplify right side
81,074.10x = 4,456,922,604.59 - Step 5: Solve for x
x = 4,456,922,604.59/81,074.10 - Step 6: Final answer
x = 54,973.45
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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.