Finding the Fourth Proportional to 86,910.75, 119,936.84 and 47,166.75
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Solution
The fourth proportional to 86,910.75, 119,936.84 and 47,166.75 is: 65,090.12
Step by Step Solution
- Step 1: Write the proportion equation
86,910.75 : 119,936.84 = 47,166.75 : x - Step 2: Convert to fraction form
86,910.75/119,936.84 = 47,166.75/x - Step 3: Cross multiply
86,910.75x = 119,936.84 × 47,166.75 - Step 4: Simplify right side
86,910.75x = 5,657,030,948.07 - Step 5: Solve for x
x = 5,657,030,948.07/86,910.75 - Step 6: Final answer
x = 65,090.12
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1.5x scale
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.