Finding the Fourth Proportional to 117,615.51, 162,297.70 and 66,618.09
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Solution
The fourth proportional to 117,615.51, 162,297.70 and 66,618.09 is: 91,926.33
Step by Step Solution
- Step 1: Write the proportion equation
117,615.51 : 162,297.70 = 66,618.09 : x - Step 2: Convert to fraction form
117,615.51/162,297.70 = 66,618.09/x - Step 3: Cross multiply
117,615.51x = 162,297.70 × 66,618.09 - Step 4: Simplify right side
117,615.51x = 10,811,962,618.85 - Step 5: Solve for x
x = 10,811,962,618.85/117,615.51 - Step 6: Final answer
x = 91,926.33
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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.