Finding the Fourth Proportional to 86,272.26, 129,408.40 and 39,525.14
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Solution
The fourth proportional to 86,272.26, 129,408.40 and 39,525.14 is: 59,287.71
Step by Step Solution
- Step 1: Write the proportion equation
86,272.26 : 129,408.40 = 39,525.14 : x - Step 2: Convert to fraction form
86,272.26/129,408.40 = 39,525.14/x - Step 3: Cross multiply
86,272.26x = 129,408.40 × 39,525.14 - Step 4: Simplify right side
86,272.26x = 5,114,885,127.18 - Step 5: Solve for x
x = 5,114,885,127.18/86,272.26 - Step 6: Final answer
x = 59,287.71
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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.