Finding the Fourth Proportional to 66,434,469.20, 99,651,703.80 and 40,792,331.60
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Solution
The fourth proportional to 66,434,469.20, 99,651,703.80 and 40,792,331.60 is: 61,188,497.40
Step by Step Solution
- Step 1: Write the proportion equation
66,434,469.20 : 99,651,703.80 = 40,792,331.60 : x - Step 2: Convert to fraction form
66,434,469.20/99,651,703.80 = 40,792,331.60/x - Step 3: Cross multiply
66,434,469.20x = 99,651,703.80 × 40,792,331.60 - Step 4: Simplify right side
66,434,469.20x = 4,065,025,345,914,580 - Step 5: Solve for x
x = 4,065,025,345,914,580/66,434,469.20 - Step 6: Final answer
x = 61,188,497.40
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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.