Finding the Fourth Proportional to 71,958,986.68, 99,303,532.18 and 39,363,938.68
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Solution
The fourth proportional to 71,958,986.68, 99,303,532.18 and 39,363,938.68 is: 54,322,306.80
Step by Step Solution
- Step 1: Write the proportion equation
71,958,986.68 : 99,303,532.18 = 39,363,938.68 : x - Step 2: Convert to fraction form
71,958,986.68/99,303,532.18 = 39,363,938.68/x - Step 3: Cross multiply
71,958,986.68x = 99,303,532.18 × 39,363,938.68 - Step 4: Simplify right side
71,958,986.68x = 3,908,978,151,440,927 - Step 5: Solve for x
x = 3,908,978,151,440,927/71,958,986.68 - Step 6: Final answer
x = 54,322,306.80
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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.