Finding the Fourth Proportional to 78,381.40, 117,592.35 and 33,997.99
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Solution
The fourth proportional to 78,381.40, 117,592.35 and 33,997.99 is: 51,005.77
Step by Step Solution
- Step 1: Write the proportion equation
78,381.40 : 117,592.35 = 33,997.99 : x - Step 2: Convert to fraction form
78,381.40/117,592.35 = 33,997.99/x - Step 3: Cross multiply
78,381.40x = 117,592.35 × 33,997.99 - Step 4: Simplify right side
78,381.40x = 3,997,903,539.38 - Step 5: Solve for x
x = 3,997,903,539.38/78,381.40 - Step 6: Final answer
x = 51,005.77
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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.