Finding the Fourth Proportional to 81,306.10, 121,995.36 and 51,716.26
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Solution
The fourth proportional to 81,306.10, 121,995.36 and 51,716.26 is: 77,597.42
Step by Step Solution
- Step 1: Write the proportion equation
81,306.10 : 121,995.36 = 51,716.26 : x - Step 2: Convert to fraction form
81,306.10/121,995.36 = 51,716.26/x - Step 3: Cross multiply
81,306.10x = 121,995.36 × 51,716.26 - Step 4: Simplify right side
81,306.10x = 6,309,143,756.55 - Step 5: Solve for x
x = 6,309,143,756.55/81,306.10 - Step 6: Final answer
x = 77,597.42
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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.