Finding the Fourth Proportional to 87,612.63, 131,343.14 and 74,372.13
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Solution
The fourth proportional to 87,612.63, 131,343.14 and 74,372.13 is: 111,493.84
Step by Step Solution
- Step 1: Write the proportion equation
87,612.63 : 131,343.14 = 74,372.13 : x - Step 2: Convert to fraction form
87,612.63/131,343.14 = 74,372.13/x - Step 3: Cross multiply
87,612.63x = 131,343.14 × 74,372.13 - Step 4: Simplify right side
87,612.63x = 9,768,268,710.83 - Step 5: Solve for x
x = 9,768,268,710.83/87,612.63 - Step 6: Final answer
x = 111,493.84
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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.