Finding the Fourth Proportional to 38,412,146.80, 57,478,252.20 and 28,334,450.80
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Solution
The fourth proportional to 38,412,146.80, 57,478,252.20 and 28,334,450.80 is: 42,398,429.79
Step by Step Solution
- Step 1: Write the proportion equation
38,412,146.80 : 57,478,252.20 = 28,334,450.80 : x - Step 2: Convert to fraction form
38,412,146.80/57,478,252.20 = 28,334,450.80/x - Step 3: Cross multiply
38,412,146.80x = 57,478,252.20 × 28,334,450.80 - Step 4: Simplify right side
38,412,146.80x = 1,628,614,709,030,892 - Step 5: Solve for x
x = 1,628,614,709,030,892/38,412,146.80 - Step 6: Final answer
x = 42,398,429.79
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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.