Finding the Fourth Proportional to 72,997.62, 100,736.74 and 39,463.62
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Solution
The fourth proportional to 72,997.62, 100,736.74 and 39,463.62 is: 54,459.81
Step by Step Solution
- Step 1: Write the proportion equation
72,997.62 : 100,736.74 = 39,463.62 : x - Step 2: Convert to fraction form
72,997.62/100,736.74 = 39,463.62/x - Step 3: Cross multiply
72,997.62x = 100,736.74 × 39,463.62 - Step 4: Simplify right side
72,997.62x = 3,975,436,427.40 - Step 5: Solve for x
x = 3,975,436,427.40/72,997.62 - Step 6: Final answer
x = 54,459.81
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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.