Finding the Fourth Proportional to 86,136.93, 129,215.12 and 39,377.25
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Solution
The fourth proportional to 86,136.93, 129,215.12 and 39,377.25 is: 59,070.32
Step by Step Solution
- Step 1: Write the proportion equation
86,136.93 : 129,215.12 = 39,377.25 : x - Step 2: Convert to fraction form
86,136.93/129,215.12 = 39,377.25/x - Step 3: Cross multiply
86,136.93x = 129,215.12 × 39,377.25 - Step 4: Simplify right side
86,136.93x = 5,088,135,887.13 - Step 5: Solve for x
x = 5,088,135,887.13/86,136.93 - Step 6: Final answer
x = 59,070.32
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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.