Finding the Fourth Proportional to 71,218,090.70, 106,827,136.05 and 66,440,516.30
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Solution
The fourth proportional to 71,218,090.70, 106,827,136.05 and 66,440,516.30 is: 99,660,774.45
Step by Step Solution
- Step 1: Write the proportion equation
71,218,090.70 : 106,827,136.05 = 66,440,516.30 : x - Step 2: Convert to fraction form
71,218,090.70/106,827,136.05 = 66,440,516.30/x - Step 3: Cross multiply
71,218,090.70x = 106,827,136.05 × 66,440,516.30 - Step 4: Simplify right side
71,218,090.70x = 7,097,650,074,012,342 - Step 5: Solve for x
x = 7,097,650,074,012,342/71,218,090.70 - Step 6: Final answer
x = 99,660,774.45
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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.