Finding the Fourth Proportional to 75,957.18, 113,874.06 and 31,617.12
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Solution
The fourth proportional to 75,957.18, 113,874.06 and 31,617.12 is: 47,399.99
Step by Step Solution
- Step 1: Write the proportion equation
75,957.18 : 113,874.06 = 31,617.12 : x - Step 2: Convert to fraction form
75,957.18/113,874.06 = 31,617.12/x - Step 3: Cross multiply
75,957.18x = 113,874.06 × 31,617.12 - Step 4: Simplify right side
75,957.18x = 3,600,369,819.91 - Step 5: Solve for x
x = 3,600,369,819.91/75,957.18 - Step 6: Final answer
x = 47,399.99
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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.