Finding the Fourth Proportional to 71,218,090.20, 106,827,135.30 and 66,440,515.80
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Solution
The fourth proportional to 71,218,090.20, 106,827,135.30 and 66,440,515.80 is: 99,660,773.70
Step by Step Solution
- Step 1: Write the proportion equation
71,218,090.20 : 106,827,135.30 = 66,440,515.80 : x - Step 2: Convert to fraction form
71,218,090.20/106,827,135.30 = 66,440,515.80/x - Step 3: Cross multiply
71,218,090.20x = 106,827,135.30 × 66,440,515.80 - Step 4: Simplify right side
71,218,090.20x = 7,097,649,970,768,387 - Step 5: Solve for x
x = 7,097,649,970,768,387/71,218,090.20 - Step 6: Final answer
x = 99,660,773.70
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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.