Finding the Fourth Proportional to 81,324.80, 121,926.94 and 38,609.09
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Solution
The fourth proportional to 81,324.80, 121,926.94 and 38,609.09 is: 57,885.03
Step by Step Solution
- Step 1: Write the proportion equation
81,324.80 : 121,926.94 = 38,609.09 : x - Step 2: Convert to fraction form
81,324.80/121,926.94 = 38,609.09/x - Step 3: Cross multiply
81,324.80x = 121,926.94 × 38,609.09 - Step 4: Simplify right side
81,324.80x = 4,707,488,199.88 - Step 5: Solve for x
x = 4,707,488,199.88/81,324.80 - Step 6: Final answer
x = 57,885.03
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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.