Finding the Fourth Proportional to 85,236.44, 117,676.74 and 75,778.88
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Solution
The fourth proportional to 85,236.44, 117,676.74 and 75,778.88 is: 104,619.71
Step by Step Solution
- Step 1: Write the proportion equation
85,236.44 : 117,676.74 = 75,778.88 : x - Step 2: Convert to fraction form
85,236.44/117,676.74 = 75,778.88/x - Step 3: Cross multiply
85,236.44x = 117,676.74 × 75,778.88 - Step 4: Simplify right side
85,236.44x = 8,917,411,559.25 - Step 5: Solve for x
x = 8,917,411,559.25/85,236.44 - Step 6: Final answer
x = 104,619.71
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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.