Finding the Fourth Proportional to 75,643.24, 113,534.88 and 38,229.70
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Solution
The fourth proportional to 75,643.24, 113,534.88 and 38,229.70 is: 57,379.94
Step by Step Solution
- Step 1: Write the proportion equation
75,643.24 : 113,534.88 = 38,229.70 : x - Step 2: Convert to fraction form
75,643.24/113,534.88 = 38,229.70/x - Step 3: Cross multiply
75,643.24x = 113,534.88 × 38,229.70 - Step 4: Simplify right side
75,643.24x = 4,340,404,401.94 - Step 5: Solve for x
x = 4,340,404,401.94/75,643.24 - Step 6: Final answer
x = 57,379.94
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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.