Finding the Fourth Proportional to 76,294.40, 114,428.52 and 20,135.08
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Solution
The fourth proportional to 76,294.40, 114,428.52 and 20,135.08 is: 30,199.17
Step by Step Solution
- Step 1: Write the proportion equation
76,294.40 : 114,428.52 = 20,135.08 : x - Step 2: Convert to fraction form
76,294.40/114,428.52 = 20,135.08/x - Step 3: Cross multiply
76,294.40x = 114,428.52 × 20,135.08 - Step 4: Simplify right side
76,294.40x = 2,304,027,404.48 - Step 5: Solve for x
x = 2,304,027,404.48/76,294.40 - Step 6: Final answer
x = 30,199.17
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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.