Finding the Fourth Proportional to 76,572.80, 114,812.16 and 29,771.12
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Solution
The fourth proportional to 76,572.80, 114,812.16 and 29,771.12 is: 44,638.39
Step by Step Solution
- Step 1: Write the proportion equation
76,572.80 : 114,812.16 = 29,771.12 : x - Step 2: Convert to fraction form
76,572.80/114,812.16 = 29,771.12/x - Step 3: Cross multiply
76,572.80x = 114,812.16 × 29,771.12 - Step 4: Simplify right side
76,572.80x = 3,418,086,592.82 - Step 5: Solve for x
x = 3,418,086,592.82/76,572.80 - Step 6: Final answer
x = 44,638.39
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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.