Finding the Fourth Proportional to 80,128,729.12, 110,580,149.28 and 45,320,738.44
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Solution
The fourth proportional to 80,128,729.12, 110,580,149.28 and 45,320,738.44 is: 62,544,034.80
Step by Step Solution
- Step 1: Write the proportion equation
80,128,729.12 : 110,580,149.28 = 45,320,738.44 : x - Step 2: Convert to fraction form
80,128,729.12/110,580,149.28 = 45,320,738.44/x - Step 3: Cross multiply
80,128,729.12x = 110,580,149.28 × 45,320,738.44 - Step 4: Simplify right side
80,128,729.12x = 5,011,574,022,175,034 - Step 5: Solve for x
x = 5,011,574,022,175,034/80,128,729.12 - Step 6: Final answer
x = 62,544,034.80
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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.