Finding the Fourth Proportional to 75,285.74, 113,611.84 and 72,776.18
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Solution
The fourth proportional to 75,285.74, 113,611.84 and 72,776.18 is: 109,824.73
Step by Step Solution
- Step 1: Write the proportion equation
75,285.74 : 113,611.84 = 72,776.18 : x - Step 2: Convert to fraction form
75,285.74/113,611.84 = 72,776.18/x - Step 3: Cross multiply
75,285.74x = 113,611.84 × 72,776.18 - Step 4: Simplify right side
75,285.74x = 8,268,235,717.97 - Step 5: Solve for x
x = 8,268,235,717.97/75,285.74 - Step 6: Final answer
x = 109,824.73
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.