Finding the Fourth Proportional to 97,986.26, 135,287.82 and 65,769.20
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Solution
The fourth proportional to 97,986.26, 135,287.82 and 65,769.20 is: 90,806.32
Step by Step Solution
- Step 1: Write the proportion equation
97,986.26 : 135,287.82 = 65,769.20 : x - Step 2: Convert to fraction form
97,986.26/135,287.82 = 65,769.20/x - Step 3: Cross multiply
97,986.26x = 135,287.82 × 65,769.20 - Step 4: Simplify right side
97,986.26x = 8,897,771,691.14 - Step 5: Solve for x
x = 8,897,771,691.14/97,986.26 - Step 6: Final answer
x = 90,806.32
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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.