Finding the Fourth Proportional to 38,860,908.99, 53,628,314.21 and 21,219,934.11
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Solution
The fourth proportional to 38,860,908.99, 53,628,314.21 and 21,219,934.11 is: 29,283,650.94
Step by Step Solution
- Step 1: Write the proportion equation
38,860,908.99 : 53,628,314.21 = 21,219,934.11 : x - Step 2: Convert to fraction form
38,860,908.99/53,628,314.21 = 21,219,934.11/x - Step 3: Cross multiply
38,860,908.99x = 53,628,314.21 × 21,219,934.11 - Step 4: Simplify right side
38,860,908.99x = 1,137,989,293,966,576.75 - Step 5: Solve for x
x = 1,137,989,293,966,576.75/38,860,908.99 - Step 6: Final answer
x = 29,283,650.94
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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.