Finding the Fourth Proportional to 69,986,246.10, 104,979,369.15 and 18,873,431.70
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Solution
The fourth proportional to 69,986,246.10, 104,979,369.15 and 18,873,431.70 is: 28,310,147.55
Step by Step Solution
- Step 1: Write the proportion equation
69,986,246.10 : 104,979,369.15 = 18,873,431.70 : x - Step 2: Convert to fraction form
69,986,246.10/104,979,369.15 = 18,873,431.70/x - Step 3: Cross multiply
69,986,246.10x = 104,979,369.15 × 18,873,431.70 - Step 4: Simplify right side
69,986,246.10x = 1,981,320,953,561,612 - Step 5: Solve for x
x = 1,981,320,953,561,612/69,986,246.10 - Step 6: Final answer
x = 28,310,147.55
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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.