Finding the Fourth Proportional to 85,239.18, 117,655.88 and 49,437.99
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Solution
The fourth proportional to 85,239.18, 117,655.88 and 49,437.99 is: 68,239.39
Step by Step Solution
- Step 1: Write the proportion equation
85,239.18 : 117,655.88 = 49,437.99 : x - Step 2: Convert to fraction form
85,239.18/117,655.88 = 49,437.99/x - Step 3: Cross multiply
85,239.18x = 117,655.88 × 49,437.99 - Step 4: Simplify right side
85,239.18x = 5,816,669,971.69 - Step 5: Solve for x
x = 5,816,669,971.69/85,239.18 - Step 6: Final answer
x = 68,239.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.