Finding the Fourth Proportional to 66,440,220.80, 99,660,331.20 and 39,118,467.20
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Solution
The fourth proportional to 66,440,220.80, 99,660,331.20 and 39,118,467.20 is: 58,677,700.80
Step by Step Solution
- Step 1: Write the proportion equation
66,440,220.80 : 99,660,331.20 = 39,118,467.20 : x - Step 2: Convert to fraction form
66,440,220.80/99,660,331.20 = 39,118,467.20/x - Step 3: Cross multiply
66,440,220.80x = 99,660,331.20 × 39,118,467.20 - Step 4: Simplify right side
66,440,220.80x = 3,898,559,397,188,337 - Step 5: Solve for x
x = 3,898,559,397,188,337/66,440,220.80 - Step 6: Final answer
x = 58,677,700.80
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1.5x scale
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.