Finding the Fourth Proportional to 81,052.17, 121,495.11 and 31,118.82
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Solution
The fourth proportional to 81,052.17, 121,495.11 and 31,118.82 is: 46,646.31
Step by Step Solution
- Step 1: Write the proportion equation
81,052.17 : 121,495.11 = 31,118.82 : x - Step 2: Convert to fraction form
81,052.17/121,495.11 = 31,118.82/x - Step 3: Cross multiply
81,052.17x = 121,495.11 × 31,118.82 - Step 4: Simplify right side
81,052.17x = 3,780,784,458.97 - Step 5: Solve for x
x = 3,780,784,458.97/81,052.17 - Step 6: Final answer
x = 46,646.31
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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.