Finding the Fourth Proportional to 71,423.36, 107,135.95 and 49,230.78
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Solution
The fourth proportional to 71,423.36, 107,135.95 and 49,230.78 is: 73,846.80
Step by Step Solution
- Step 1: Write the proportion equation
71,423.36 : 107,135.95 = 49,230.78 : x - Step 2: Convert to fraction form
71,423.36/107,135.95 = 49,230.78/x - Step 3: Cross multiply
71,423.36x = 107,135.95 × 49,230.78 - Step 4: Simplify right side
71,423.36x = 5,274,386,384.54 - Step 5: Solve for x
x = 5,274,386,384.54/71,423.36 - Step 6: Final answer
x = 73,846.80
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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.