Finding the Fourth Proportional to 76,806,549.12, 115,209,940.30 and 31,368,343.62
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Solution
The fourth proportional to 76,806,549.12, 115,209,940.30 and 31,368,343.62 is: 47,052,563.06
Step by Step Solution
- Step 1: Write the proportion equation
76,806,549.12 : 115,209,940.30 = 31,368,343.62 : x - Step 2: Convert to fraction form
76,806,549.12/115,209,940.30 = 31,368,343.62/x - Step 3: Cross multiply
76,806,549.12x = 115,209,940.30 × 31,368,343.62 - Step 4: Simplify right side
76,806,549.12x = 3,613,944,995,770,086 - Step 5: Solve for x
x = 3,613,944,995,770,086/76,806,549.12 - Step 6: Final answer
x = 47,052,563.06
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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.