Finding the Fourth Proportional to 12,431,642.05, 18,650,347.86 and 3,911,757.09
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Solution
The fourth proportional to 12,431,642.05, 18,650,347.86 and 3,911,757.09 is: 5,868,543.36
Step by Step Solution
- Step 1: Write the proportion equation
12,431,642.05 : 18,650,347.86 = 3,911,757.09 : x - Step 2: Convert to fraction form
12,431,642.05/18,650,347.86 = 3,911,757.09/x - Step 3: Cross multiply
12,431,642.05x = 18,650,347.86 × 3,911,757.09 - Step 4: Simplify right side
12,431,642.05x = 72,955,630,379,069.58 - Step 5: Solve for x
x = 72,955,630,379,069.58/12,431,642.05 - Step 6: Final answer
x = 5,868,543.36
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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.