Finding the Fourth Proportional to 100,549.14, 138,723.80 and 57,497.94
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Solution
The fourth proportional to 100,549.14, 138,723.80 and 57,497.94 is: 79,327.71
Step by Step Solution
- Step 1: Write the proportion equation
100,549.14 : 138,723.80 = 57,497.94 : x - Step 2: Convert to fraction form
100,549.14/138,723.80 = 57,497.94/x - Step 3: Cross multiply
100,549.14x = 138,723.80 × 57,497.94 - Step 4: Simplify right side
100,549.14x = 7,976,332,728.97 - Step 5: Solve for x
x = 7,976,332,728.97/100,549.14 - Step 6: Final answer
x = 79,327.71
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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.