Finding the Fourth Proportional to 71,424.96, 107,144.64 and 18,838.08
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Solution
The fourth proportional to 71,424.96, 107,144.64 and 18,838.08 is: 28,259.02
Step by Step Solution
- Step 1: Write the proportion equation
71,424.96 : 107,144.64 = 18,838.08 : x - Step 2: Convert to fraction form
71,424.96/107,144.64 = 18,838.08/x - Step 3: Cross multiply
71,424.96x = 107,144.64 × 18,838.08 - Step 4: Simplify right side
71,424.96x = 2,018,399,299.89 - Step 5: Solve for x
x = 2,018,399,299.89/71,424.96 - Step 6: Final answer
x = 28,259.02
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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.