Finding the Fourth Proportional to 71,121.24, 106,657.16 and 39,579.44
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Solution
The fourth proportional to 71,121.24, 106,657.16 and 39,579.44 is: 59,355.40
Step by Step Solution
- Step 1: Write the proportion equation
71,121.24 : 106,657.16 = 39,579.44 : x - Step 2: Convert to fraction form
71,121.24/106,657.16 = 39,579.44/x - Step 3: Cross multiply
71,121.24x = 106,657.16 × 39,579.44 - Step 4: Simplify right side
71,121.24x = 4,221,429,933.61 - Step 5: Solve for x
x = 4,221,429,933.61/71,121.24 - Step 6: Final answer
x = 59,355.40
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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.