Finding the Fourth Proportional to 77,885.01, 107,409.54 and 51,997.99
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Solution
The fourth proportional to 77,885.01, 107,409.54 and 51,997.99 is: 71,709.31
Step by Step Solution
- Step 1: Write the proportion equation
77,885.01 : 107,409.54 = 51,997.99 : x - Step 2: Convert to fraction form
77,885.01/107,409.54 = 51,997.99/x - Step 3: Cross multiply
77,885.01x = 107,409.54 × 51,997.99 - Step 4: Simplify right side
77,885.01x = 5,585,080,186.82 - Step 5: Solve for x
x = 5,585,080,186.82/77,885.01 - Step 6: Final answer
x = 71,709.31
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1.5x scale
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.