Finding the Fourth Proportional to 86,631.36, 119,668.28 and 65,282.48
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Solution
The fourth proportional to 86,631.36, 119,668.28 and 65,282.48 is: 90,177.99
Step by Step Solution
- Step 1: Write the proportion equation
86,631.36 : 119,668.28 = 65,282.48 : x - Step 2: Convert to fraction form
86,631.36/119,668.28 = 65,282.48/x - Step 3: Cross multiply
86,631.36x = 119,668.28 × 65,282.48 - Step 4: Simplify right side
86,631.36x = 7,812,241,497.39 - Step 5: Solve for x
x = 7,812,241,497.39/86,631.36 - Step 6: Final answer
x = 90,177.99
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1.5x scale
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.