Finding the Fourth Proportional to 75,459.69, 113,189.49 and 19,299.90
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Solution
The fourth proportional to 75,459.69, 113,189.49 and 19,299.90 is: 28,949.84
Step by Step Solution
- Step 1: Write the proportion equation
75,459.69 : 113,189.49 = 19,299.90 : x - Step 2: Convert to fraction form
75,459.69/113,189.49 = 19,299.90/x - Step 3: Cross multiply
75,459.69x = 113,189.49 × 19,299.90 - Step 4: Simplify right side
75,459.69x = 2,184,545,838.05 - Step 5: Solve for x
x = 2,184,545,838.05/75,459.69 - Step 6: Final answer
x = 28,949.84
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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.