Finding the Fourth Proportional to 38,187,070.12, 57,274,915.74 and 12,628,213.48
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Solution
The fourth proportional to 38,187,070.12, 57,274,915.74 and 12,628,213.48 is: 18,940,438.76
Step by Step Solution
- Step 1: Write the proportion equation
38,187,070.12 : 57,274,915.74 = 12,628,213.48 : x - Step 2: Convert to fraction form
38,187,070.12/57,274,915.74 = 12,628,213.48/x - Step 3: Cross multiply
38,187,070.12x = 57,274,915.74 × 12,628,213.48 - Step 4: Simplify right side
38,187,070.12x = 723,279,863,013,732.25 - Step 5: Solve for x
x = 723,279,863,013,732.25/38,187,070.12 - Step 6: Final answer
x = 18,940,438.76
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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.