Finding the Fourth Proportional to 81,378,175.92, 112,236,933.60 and 53,529,486.72
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Solution
The fourth proportional to 81,378,175.92, 112,236,933.60 and 53,529,486.72 is: 73,827,968.97
Step by Step Solution
- Step 1: Write the proportion equation
81,378,175.92 : 112,236,933.60 = 53,529,486.72 : x - Step 2: Convert to fraction form
81,378,175.92/112,236,933.60 = 53,529,486.72/x - Step 3: Cross multiply
81,378,175.92x = 112,236,933.60 × 53,529,486.72 - Step 4: Simplify right side
81,378,175.92x = 6,007,985,446,634,721 - Step 5: Solve for x
x = 6,007,985,446,634,721/81,378,175.92 - Step 6: Final answer
x = 73,827,968.97
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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.