Finding the Fourth Proportional to 57,084,989.08, 78,777,861.74 and 30,979,732.44
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Solution
The fourth proportional to 57,084,989.08, 78,777,861.74 and 30,979,732.44 is: 42,752,343.80
Step by Step Solution
- Step 1: Write the proportion equation
57,084,989.08 : 78,777,861.74 = 30,979,732.44 : x - Step 2: Convert to fraction form
57,084,989.08/78,777,861.74 = 30,979,732.44/x - Step 3: Cross multiply
57,084,989.08x = 78,777,861.74 × 30,979,732.44 - Step 4: Simplify right side
57,084,989.08x = 2,440,517,078,900,513 - Step 5: Solve for x
x = 2,440,517,078,900,513/57,084,989.08 - Step 6: Final answer
x = 42,752,343.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.