Finding the Fourth Proportional to 77,921.22, 107,549.17 and 47,723.18
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Solution
The fourth proportional to 77,921.22, 107,549.17 and 47,723.18 is: 65,868.94
Step by Step Solution
- Step 1: Write the proportion equation
77,921.22 : 107,549.17 = 47,723.18 : x - Step 2: Convert to fraction form
77,921.22/107,549.17 = 47,723.18/x - Step 3: Cross multiply
77,921.22x = 107,549.17 × 47,723.18 - Step 4: Simplify right side
77,921.22x = 5,132,587,891.27 - Step 5: Solve for x
x = 5,132,587,891.27/77,921.22 - Step 6: Final answer
x = 65,868.94
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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.