Finding the Fourth Proportional to 75,416.18, 113,138.84 and 28,665.42
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Solution
The fourth proportional to 75,416.18, 113,138.84 and 28,665.42 is: 43,003.67
Step by Step Solution
- Step 1: Write the proportion equation
75,416.18 : 113,138.84 = 28,665.42 : x - Step 2: Convert to fraction form
75,416.18/113,138.84 = 28,665.42/x - Step 3: Cross multiply
75,416.18x = 113,138.84 × 28,665.42 - Step 4: Simplify right side
75,416.18x = 3,243,172,366.91 - Step 5: Solve for x
x = 3,243,172,366.91/75,416.18 - Step 6: Final answer
x = 43,003.67
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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.