Finding the Fourth Proportional to 75,686.75, 104,450.96 and 42,152.75
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Solution
The fourth proportional to 75,686.75, 104,450.96 and 42,152.75 is: 58,172.60
Step by Step Solution
- Step 1: Write the proportion equation
75,686.75 : 104,450.96 = 42,152.75 : x - Step 2: Convert to fraction form
75,686.75/104,450.96 = 42,152.75/x - Step 3: Cross multiply
75,686.75x = 104,450.96 × 42,152.75 - Step 4: Simplify right side
75,686.75x = 4,402,894,993.38 - Step 5: Solve for x
x = 4,402,894,993.38/75,686.75 - Step 6: Final answer
x = 58,172.60
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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.