Finding the Fourth Proportional to 83,578,687.72, 124,805,230.11 and 68,256,394.86
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Solution
The fourth proportional to 83,578,687.72, 124,805,230.11 and 68,256,394.86 is: 101,924,967.95
Step by Step Solution
- Step 1: Write the proportion equation
83,578,687.72 : 124,805,230.11 = 68,256,394.86 : x - Step 2: Convert to fraction form
83,578,687.72/124,805,230.11 = 68,256,394.86/x - Step 3: Cross multiply
83,578,687.72x = 124,805,230.11 × 68,256,394.86 - Step 4: Simplify right side
83,578,687.72x = 8,518,755,066,839,949 - Step 5: Solve for x
x = 8,518,755,066,839,949/83,578,687.72 - Step 6: Final answer
x = 101,924,967.95
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.