Finding the Fourth Proportional to 71,421.10, 107,143.95 and 29,324.09
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Solution
The fourth proportional to 71,421.10, 107,143.95 and 29,324.09 is: 43,991.19
Step by Step Solution
- Step 1: Write the proportion equation
71,421.10 : 107,143.95 = 29,324.09 : x - Step 2: Convert to fraction form
71,421.10/107,143.95 = 29,324.09/x - Step 3: Cross multiply
71,421.10x = 107,143.95 × 29,324.09 - Step 4: Simplify right side
71,421.10x = 3,141,898,832.76 - Step 5: Solve for x
x = 3,141,898,832.76/71,421.10 - Step 6: Final answer
x = 43,991.19
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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.