Finding the Fourth Proportional to 31,383,648.54, 43,309,952.97 and 17,255,431.99
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Solution
The fourth proportional to 31,383,648.54, 43,309,952.97 and 17,255,431.99 is: 23,812,780.94
Step by Step Solution
- Step 1: Write the proportion equation
31,383,648.54 : 43,309,952.97 = 17,255,431.99 : x - Step 2: Convert to fraction form
31,383,648.54/43,309,952.97 = 17,255,431.99/x - Step 3: Cross multiply
31,383,648.54x = 43,309,952.97 × 17,255,431.99 - Step 4: Simplify right side
31,383,648.54x = 747,331,947,718,935 - Step 5: Solve for x
x = 747,331,947,718,935/31,383,648.54 - Step 6: Final answer
x = 23,812,780.94
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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.