Finding the Fourth Proportional to 86,534.70, 129,882.21 and 53,319.66
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Solution
The fourth proportional to 86,534.70, 129,882.21 and 53,319.66 is: 80,028.88
Step by Step Solution
- Step 1: Write the proportion equation
86,534.70 : 129,882.21 = 53,319.66 : x - Step 2: Convert to fraction form
86,534.70/129,882.21 = 53,319.66/x - Step 3: Cross multiply
86,534.70x = 129,882.21 × 53,319.66 - Step 4: Simplify right side
86,534.70x = 6,925,275,277.25 - Step 5: Solve for x
x = 6,925,275,277.25/86,534.70 - Step 6: Final answer
x = 80,028.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.