Finding the Fourth Proportional to 91,623,129, 126,442,534.95 and 55,861,633.68
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Solution
The fourth proportional to 91,623,129, 126,442,534.95 and 55,861,633.68 is: 77,090,649.99
Step by Step Solution
- Step 1: Write the proportion equation
91,623,129 : 126,442,534.95 = 55,861,633.68 : x - Step 2: Convert to fraction form
91,623,129/126,442,534.95 = 55,861,633.68/x - Step 3: Cross multiply
91,623,129x = 126,442,534.95 × 55,861,633.68 - Step 4: Simplify right side
91,623,129x = 7,063,286,568,947,497 - Step 5: Solve for x
x = 7,063,286,568,947,497/91,623,129 - Step 6: Final answer
x = 77,090,649.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.