Finding the Fourth Proportional to 79,186.79, 109,277.80 and 43,378.09
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Solution
The fourth proportional to 79,186.79, 109,277.80 and 43,378.09 is: 59,861.77
Step by Step Solution
- Step 1: Write the proportion equation
79,186.79 : 109,277.80 = 43,378.09 : x - Step 2: Convert to fraction form
79,186.79/109,277.80 = 43,378.09/x - Step 3: Cross multiply
79,186.79x = 109,277.80 × 43,378.09 - Step 4: Simplify right side
79,186.79x = 4,740,261,861.76 - Step 5: Solve for x
x = 4,740,261,861.76/79,186.79 - Step 6: Final answer
x = 59,861.77
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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.