Finding the Fourth Proportional to 86,075.88, 128,874.34 and 43,864.96
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Solution
The fourth proportional to 86,075.88, 128,874.34 and 43,864.96 is: 65,675.40
Step by Step Solution
- Step 1: Write the proportion equation
86,075.88 : 128,874.34 = 43,864.96 : x - Step 2: Convert to fraction form
86,075.88/128,874.34 = 43,864.96/x - Step 3: Cross multiply
86,075.88x = 128,874.34 × 43,864.96 - Step 4: Simplify right side
86,075.88x = 5,653,067,769.13 - Step 5: Solve for x
x = 5,653,067,769.13/86,075.88 - Step 6: Final answer
x = 65,675.40
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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.