Finding the Fourth Proportional to 38,636,687.20, 57,962,029.20 and 19,419,080.80
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Solution
The fourth proportional to 38,636,687.20, 57,962,029.20 and 19,419,080.80 is: 29,132,138.65
Step by Step Solution
- Step 1: Write the proportion equation
38,636,687.20 : 57,962,029.20 = 19,419,080.80 : x - Step 2: Convert to fraction form
38,636,687.20/57,962,029.20 = 19,419,080.80/x - Step 3: Cross multiply
38,636,687.20x = 57,962,029.20 × 19,419,080.80 - Step 4: Simplify right side
38,636,687.20x = 1,125,569,328,366,759.50 - Step 5: Solve for x
x = 1,125,569,328,366,759.50/38,636,687.20 - Step 6: Final answer
x = 29,132,138.65
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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.