Finding the Fourth Proportional to 65,613,988.62, 90,545,546.79 and 36,244,689.08
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Solution
The fourth proportional to 65,613,988.62, 90,545,546.79 and 36,244,689.08 is: 50,016,700.09
Step by Step Solution
- Step 1: Write the proportion equation
65,613,988.62 : 90,545,546.79 = 36,244,689.08 : x - Step 2: Convert to fraction form
65,613,988.62/90,545,546.79 = 36,244,689.08/x - Step 3: Cross multiply
65,613,988.62x = 90,545,546.79 × 36,244,689.08 - Step 4: Simplify right side
65,613,988.62x = 3,281,795,190,529,415 - Step 5: Solve for x
x = 3,281,795,190,529,415/65,613,988.62 - Step 6: Final answer
x = 50,016,700.09
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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.