Finding the Fourth Proportional to 84,128,086.40, 126,192,129.60 and 69,767,369.60
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Solution
The fourth proportional to 84,128,086.40, 126,192,129.60 and 69,767,369.60 is: 104,651,054.40
Step by Step Solution
- Step 1: Write the proportion equation
84,128,086.40 : 126,192,129.60 = 69,767,369.60 : x - Step 2: Convert to fraction form
84,128,086.40/126,192,129.60 = 69,767,369.60/x - Step 3: Cross multiply
84,128,086.40x = 126,192,129.60 × 69,767,369.60 - Step 4: Simplify right side
84,128,086.40x = 8,804,092,946,414,299 - Step 5: Solve for x
x = 8,804,092,946,414,299/84,128,086.40 - Step 6: Final answer
x = 104,651,054.40
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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.