Finding the Fourth Proportional to 100,668,593.97, 138,906,422.58 and 56,612,965.44
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Solution
The fourth proportional to 100,668,593.97, 138,906,422.58 and 56,612,965.44 is: 78,116,761.06
Step by Step Solution
- Step 1: Write the proportion equation
100,668,593.97 : 138,906,422.58 = 56,612,965.44 : x - Step 2: Convert to fraction form
100,668,593.97/138,906,422.58 = 56,612,965.44/x - Step 3: Cross multiply
100,668,593.97x = 138,906,422.58 × 56,612,965.44 - Step 4: Simplify right side
100,668,593.97x = 7,863,904,500,979,777 - Step 5: Solve for x
x = 7,863,904,500,979,777/100,668,593.97 - Step 6: Final answer
x = 78,116,761.06
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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.