Finding the Fourth Proportional to 66,235,673.42, 91,389,593.56 and 55,679,198.70
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Solution
The fourth proportional to 66,235,673.42, 91,389,593.56 and 55,679,198.70 is: 76,824,150.44
Step by Step Solution
- Step 1: Write the proportion equation
66,235,673.42 : 91,389,593.56 = 55,679,198.70 : x - Step 2: Convert to fraction form
66,235,673.42/91,389,593.56 = 55,679,198.70/x - Step 3: Cross multiply
66,235,673.42x = 91,389,593.56 × 55,679,198.70 - Step 4: Simplify right side
66,235,673.42x = 5,088,499,338,661,085 - Step 5: Solve for x
x = 5,088,499,338,661,085/66,235,673.42 - Step 6: Final answer
x = 76,824,150.44
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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.