Finding the Fourth Proportional to 79,837.21, 110,170.31 and 45,821.75
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Solution
The fourth proportional to 79,837.21, 110,170.31 and 45,821.75 is: 63,231.12
Step by Step Solution
- Step 1: Write the proportion equation
79,837.21 : 110,170.31 = 45,821.75 : x - Step 2: Convert to fraction form
79,837.21/110,170.31 = 45,821.75/x - Step 3: Cross multiply
79,837.21x = 110,170.31 × 45,821.75 - Step 4: Simplify right side
79,837.21x = 5,048,196,402.24 - Step 5: Solve for x
x = 5,048,196,402.24/79,837.21 - Step 6: Final answer
x = 63,231.12
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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.