Finding the Fourth Proportional to 82,032,090.40, 123,048,135.60 and 68,694,695.20
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Solution
The fourth proportional to 82,032,090.40, 123,048,135.60 and 68,694,695.20 is: 103,042,042.80
Step by Step Solution
- Step 1: Write the proportion equation
82,032,090.40 : 123,048,135.60 = 68,694,695.20 : x - Step 2: Convert to fraction form
82,032,090.40/123,048,135.60 = 68,694,695.20/x - Step 3: Cross multiply
82,032,090.40x = 123,048,135.60 × 68,694,695.20 - Step 4: Simplify right side
82,032,090.40x = 8,452,754,169,970,269 - Step 5: Solve for x
x = 8,452,754,169,970,269/82,032,090.40 - Step 6: Final answer
x = 103,042,042.80
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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.