Finding the Fourth Proportional to 84,563,452.80, 126,845,179.20 and 71,425,123.20
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Solution
The fourth proportional to 84,563,452.80, 126,845,179.20 and 71,425,123.20 is: 107,137,684.80
Step by Step Solution
- Step 1: Write the proportion equation
84,563,452.80 : 126,845,179.20 = 71,425,123.20 : x - Step 2: Convert to fraction form
84,563,452.80/126,845,179.20 = 71,425,123.20/x - Step 3: Cross multiply
84,563,452.80x = 126,845,179.20 × 71,425,123.20 - Step 4: Simplify right side
84,563,452.80x = 9,059,932,551,686,078 - Step 5: Solve for x
x = 9,059,932,551,686,078/84,563,452.80 - Step 6: Final answer
x = 107,137,684.80
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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.