Finding the Fourth Proportional to 39,302,874.71, 54,235,753.72 and 21,661,723.79
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Solution
The fourth proportional to 39,302,874.71, 54,235,753.72 and 21,661,723.79 is: 29,891,958.93
Step by Step Solution
- Step 1: Write the proportion equation
39,302,874.71 : 54,235,753.72 = 21,661,723.79 : x - Step 2: Convert to fraction form
39,302,874.71/54,235,753.72 = 21,661,723.79/x - Step 3: Cross multiply
39,302,874.71x = 54,235,753.72 × 21,661,723.79 - Step 4: Simplify right side
39,302,874.71x = 1,174,839,916,625,105 - Step 5: Solve for x
x = 1,174,839,916,625,105/39,302,874.71 - Step 6: Final answer
x = 29,891,958.93
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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.