Finding the Fourth Proportional to 30,278,986.31, 41,784,467.90 and 17,225,966.99
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Solution
The fourth proportional to 30,278,986.31, 41,784,467.90 and 17,225,966.99 is: 23,771,531.10
Step by Step Solution
- Step 1: Write the proportion equation
30,278,986.31 : 41,784,467.90 = 17,225,966.99 : x - Step 2: Convert to fraction form
30,278,986.31/41,784,467.90 = 17,225,966.99/x - Step 3: Cross multiply
30,278,986.31x = 41,784,467.90 × 17,225,966.99 - Step 4: Simplify right side
30,278,986.31x = 719,777,864,758,446 - Step 5: Solve for x
x = 719,777,864,758,446/30,278,986.31 - Step 6: Final answer
x = 23,771,531.10
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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.