Finding the Fourth Proportional to 71,646.26, 107,455.40 and 68,090.06
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Solution
The fourth proportional to 71,646.26, 107,455.40 and 68,090.06 is: 102,121.79
Step by Step Solution
- Step 1: Write the proportion equation
71,646.26 : 107,455.40 = 68,090.06 : x - Step 2: Convert to fraction form
71,646.26/107,455.40 = 68,090.06/x - Step 3: Cross multiply
71,646.26x = 107,455.40 × 68,090.06 - Step 4: Simplify right side
71,646.26x = 7,316,644,633.32 - Step 5: Solve for x
x = 7,316,644,633.32/71,646.26 - Step 6: Final answer
x = 102,121.79
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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.