Finding the Fourth Proportional to 39,975,879.97, 55,166,732.94 and 21,641,165.47
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Solution
The fourth proportional to 39,975,879.97, 55,166,732.94 and 21,641,165.47 is: 29,864,818.41
Step by Step Solution
- Step 1: Write the proportion equation
39,975,879.97 : 55,166,732.94 = 21,641,165.47 : x - Step 2: Convert to fraction form
39,975,879.97/55,166,732.94 = 21,641,165.47/x - Step 3: Cross multiply
39,975,879.97x = 55,166,732.94 × 21,641,165.47 - Step 4: Simplify right side
39,975,879.97x = 1,193,872,395,993,839.50 - Step 5: Solve for x
x = 1,193,872,395,993,839.50/39,975,879.97 - Step 6: Final answer
x = 29,864,818.41
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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.