Finding the Fourth Proportional to 81,161.14, 121,703.36 and 47,436.82
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Solution
The fourth proportional to 81,161.14, 121,703.36 and 47,436.82 is: 71,132.82
Step by Step Solution
- Step 1: Write the proportion equation
81,161.14 : 121,703.36 = 47,436.82 : x - Step 2: Convert to fraction form
81,161.14/121,703.36 = 47,436.82/x - Step 3: Cross multiply
81,161.14x = 121,703.36 × 47,436.82 - Step 4: Simplify right side
81,161.14x = 5,773,220,381.72 - Step 5: Solve for x
x = 5,773,220,381.72/81,161.14 - Step 6: Final answer
x = 71,132.82
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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.