Finding the Fourth Proportional to 71,613.18, 107,421.57 and 19,022.58
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Solution
The fourth proportional to 71,613.18, 107,421.57 and 19,022.58 is: 28,534.35
Step by Step Solution
- Step 1: Write the proportion equation
71,613.18 : 107,421.57 = 19,022.58 : x - Step 2: Convert to fraction form
71,613.18/107,421.57 = 19,022.58/x - Step 3: Cross multiply
71,613.18x = 107,421.57 × 19,022.58 - Step 4: Simplify right side
71,613.18x = 2,043,435,409.05 - Step 5: Solve for x
x = 2,043,435,409.05/71,613.18 - Step 6: Final answer
x = 28,534.35
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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.