Finding the Fourth Proportional to 85,495.49, 128,243.21 and 23,165.99
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Solution
The fourth proportional to 85,495.49, 128,243.21 and 23,165.99 is: 34,748.97
Step by Step Solution
- Step 1: Write the proportion equation
85,495.49 : 128,243.21 = 23,165.99 : x - Step 2: Convert to fraction form
85,495.49/128,243.21 = 23,165.99/x - Step 3: Cross multiply
85,495.49x = 128,243.21 × 23,165.99 - Step 4: Simplify right side
85,495.49x = 2,970,880,163.38 - Step 5: Solve for x
x = 2,970,880,163.38/85,495.49 - Step 6: Final answer
x = 34,748.97
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Half scale
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Double scale
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Similar ratio
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1.5x scale
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.