Finding the Fourth Proportional to 72,156,519.97, 108,223,843.98 and 19,638,283.97
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Solution
The fourth proportional to 72,156,519.97, 108,223,843.98 and 19,638,283.97 is: 29,454,449.59
Step by Step Solution
- Step 1: Write the proportion equation
72,156,519.97 : 108,223,843.98 = 19,638,283.97 : x - Step 2: Convert to fraction form
72,156,519.97/108,223,843.98 = 19,638,283.97/x - Step 3: Cross multiply
72,156,519.97x = 108,223,843.98 × 19,638,283.97 - Step 4: Simplify right side
72,156,519.97x = 2,125,330,580,404,215 - Step 5: Solve for x
x = 2,125,330,580,404,215/72,156,519.97 - Step 6: Final answer
x = 29,454,449.59
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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.