Finding the Fourth Proportional to 39,192,947.97, 54,086,478.35 and 21,552,987.78
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Solution
The fourth proportional to 39,192,947.97, 54,086,478.35 and 21,552,987.78 is: 29,743,238.70
Step by Step Solution
- Step 1: Write the proportion equation
39,192,947.97 : 54,086,478.35 = 21,552,987.78 : x - Step 2: Convert to fraction form
39,192,947.97/54,086,478.35 = 21,552,987.78/x - Step 3: Cross multiply
39,192,947.97x = 54,086,478.35 × 21,552,987.78 - Step 4: Simplify right side
39,192,947.97x = 1,165,725,206,833,019.75 - Step 5: Solve for x
x = 1,165,725,206,833,019.75/39,192,947.97 - Step 6: Final answer
x = 29,743,238.70
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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.