Finding the Fourth Proportional to 86,537.36, 129,760.80 and 39,111.68
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Solution
The fourth proportional to 86,537.36, 129,760.80 and 39,111.68 is: 58,647.07
Step by Step Solution
- Step 1: Write the proportion equation
86,537.36 : 129,760.80 = 39,111.68 : x - Step 2: Convert to fraction form
86,537.36/129,760.80 = 39,111.68/x - Step 3: Cross multiply
86,537.36x = 129,760.80 × 39,111.68 - Step 4: Simplify right side
86,537.36x = 5,075,162,886.14 - Step 5: Solve for x
x = 5,075,162,886.14/86,537.36 - Step 6: Final answer
x = 58,647.07
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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.