Finding the Fourth Proportional to 86,638.25, 129,881.43 and 41,637.08
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Solution
The fourth proportional to 86,638.25, 129,881.43 and 41,637.08 is: 62,419.12
Step by Step Solution
- Step 1: Write the proportion equation
86,638.25 : 129,881.43 = 41,637.08 : x - Step 2: Convert to fraction form
86,638.25/129,881.43 = 41,637.08/x - Step 3: Cross multiply
86,638.25x = 129,881.43 × 41,637.08 - Step 4: Simplify right side
86,638.25x = 5,407,883,816.13 - Step 5: Solve for x
x = 5,407,883,816.13/86,638.25 - Step 6: Final answer
x = 62,419.12
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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.