Finding the Fourth Proportional to 71,235.12, 106,813.19 and 29,144.74
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Solution
The fourth proportional to 71,235.12, 106,813.19 and 29,144.74 is: 43,700.95
Step by Step Solution
- Step 1: Write the proportion equation
71,235.12 : 106,813.19 = 29,144.74 : x - Step 2: Convert to fraction form
71,235.12/106,813.19 = 29,144.74/x - Step 3: Cross multiply
71,235.12x = 106,813.19 × 29,144.74 - Step 4: Simplify right side
71,235.12x = 3,113,042,651.12 - Step 5: Solve for x
x = 3,113,042,651.12/71,235.12 - Step 6: Final answer
x = 43,700.95
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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.