Finding the Fourth Proportional to 85,609.11, 128,381.73 and 29,433.31
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Solution
The fourth proportional to 85,609.11, 128,381.73 and 29,433.31 is: 44,138.99
Step by Step Solution
- Step 1: Write the proportion equation
85,609.11 : 128,381.73 = 29,433.31 : x - Step 2: Convert to fraction form
85,609.11/128,381.73 = 29,433.31/x - Step 3: Cross multiply
85,609.11x = 128,381.73 × 29,433.31 - Step 4: Simplify right side
85,609.11x = 3,778,699,257.43 - Step 5: Solve for x
x = 3,778,699,257.43/85,609.11 - Step 6: Final answer
x = 44,138.99
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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.