Finding the Fourth Proportional to 70,382,455.98, 105,590,207.97 and 21,857,805.42
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Solution
The fourth proportional to 70,382,455.98, 105,590,207.97 and 21,857,805.42 is: 32,791,839.78
Step by Step Solution
- Step 1: Write the proportion equation
70,382,455.98 : 105,590,207.97 = 21,857,805.42 : x - Step 2: Convert to fraction form
70,382,455.98/105,590,207.97 = 21,857,805.42/x - Step 3: Cross multiply
70,382,455.98x = 105,590,207.97 × 21,857,805.42 - Step 4: Simplify right side
70,382,455.98x = 2,307,970,220,065,593.50 - Step 5: Solve for x
x = 2,307,970,220,065,593.50/70,382,455.98 - Step 6: Final answer
x = 32,791,839.78
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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.