Finding the Fourth Proportional to 10,129,356.42, 13,979,843.19 and 5,777,445.12
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Solution
The fourth proportional to 10,129,356.42, 13,979,843.19 and 5,777,445.12 is: 7,973,633.61
Step by Step Solution
- Step 1: Write the proportion equation
10,129,356.42 : 13,979,843.19 = 5,777,445.12 : x - Step 2: Convert to fraction form
10,129,356.42/13,979,843.19 = 5,777,445.12/x - Step 3: Cross multiply
10,129,356.42x = 13,979,843.19 × 5,777,445.12 - Step 4: Simplify right side
10,129,356.42x = 80,767,776,816,430.73 - Step 5: Solve for x
x = 80,767,776,816,430.73/10,129,356.42 - Step 6: Final answer
x = 7,973,633.61
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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.