Finding the Fourth Proportional to 115,845.12, 173,781.36 and 36,931.68
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Solution
The fourth proportional to 115,845.12, 173,781.36 and 36,931.68 is: 55,401.88
Step by Step Solution
- Step 1: Write the proportion equation
115,845.12 : 173,781.36 = 36,931.68 : x - Step 2: Convert to fraction form
115,845.12/173,781.36 = 36,931.68/x - Step 3: Cross multiply
115,845.12x = 173,781.36 × 36,931.68 - Step 4: Simplify right side
115,845.12x = 6,418,037,577.48 - Step 5: Solve for x
x = 6,418,037,577.48/115,845.12 - Step 6: Final answer
x = 55,401.88
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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.