Finding the Fourth Proportional to 71,218,234.20, 106,827,351.30 and 66,440,659.80
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Solution
The fourth proportional to 71,218,234.20, 106,827,351.30 and 66,440,659.80 is: 99,660,989.70
Step by Step Solution
- Step 1: Write the proportion equation
71,218,234.20 : 106,827,351.30 = 66,440,659.80 : x - Step 2: Convert to fraction form
71,218,234.20/106,827,351.30 = 66,440,659.80/x - Step 3: Cross multiply
71,218,234.20x = 106,827,351.30 × 66,440,659.80 - Step 4: Simplify right side
71,218,234.20x = 7,097,679,705,058,387 - Step 5: Solve for x
x = 7,097,679,705,058,387/71,218,234.20 - Step 6: Final answer
x = 99,660,989.70
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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.