Finding the Fourth Proportional to 71,542,633.80, 107,313,950.70 and 66,759,664.80
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Solution
The fourth proportional to 71,542,633.80, 107,313,950.70 and 66,759,664.80 is: 100,139,497.20
Step by Step Solution
- Step 1: Write the proportion equation
71,542,633.80 : 107,313,950.70 = 66,759,664.80 : x - Step 2: Convert to fraction form
71,542,633.80/107,313,950.70 = 66,759,664.80/x - Step 3: Cross multiply
71,542,633.80x = 107,313,950.70 × 66,759,664.80 - Step 4: Simplify right side
71,542,633.80x = 7,164,243,377,095,725 - Step 5: Solve for x
x = 7,164,243,377,095,725/71,542,633.80 - Step 6: Final answer
x = 100,139,497.20
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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.