Finding the Fourth Proportional to 81,997.77, 122,996.68 and 63,305.09
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Solution
The fourth proportional to 81,997.77, 122,996.68 and 63,305.09 is: 94,957.66
Step by Step Solution
- Step 1: Write the proportion equation
81,997.77 : 122,996.68 = 63,305.09 : x - Step 2: Convert to fraction form
81,997.77/122,996.68 = 63,305.09/x - Step 3: Cross multiply
81,997.77x = 122,996.68 × 63,305.09 - Step 4: Simplify right side
81,997.77x = 7,786,316,276.95 - Step 5: Solve for x
x = 7,786,316,276.95/81,997.77 - Step 6: Final answer
x = 94,957.66
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1.5x scale
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.