Finding the Fourth Proportional to 85,976.75, 128,990.75 and 41,031.84
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Solution
The fourth proportional to 85,976.75, 128,990.75 and 41,031.84 is: 61,559.99
Step by Step Solution
- Step 1: Write the proportion equation
85,976.75 : 128,990.75 = 41,031.84 : x - Step 2: Convert to fraction form
85,976.75/128,990.75 = 41,031.84/x - Step 3: Cross multiply
85,976.75x = 128,990.75 × 41,031.84 - Step 4: Simplify right side
85,976.75x = 5,292,727,610.32 - Step 5: Solve for x
x = 5,292,727,610.32/85,976.75 - Step 6: Final answer
x = 61,559.99
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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.