Finding the Fourth Proportional to 73,679.09, 101,677.16 and 40,145.09
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Solution
The fourth proportional to 73,679.09, 101,677.16 and 40,145.09 is: 55,400.23
Step by Step Solution
- Step 1: Write the proportion equation
73,679.09 : 101,677.16 = 40,145.09 : x - Step 2: Convert to fraction form
73,679.09/101,677.16 = 40,145.09/x - Step 3: Cross multiply
73,679.09x = 101,677.16 × 40,145.09 - Step 4: Simplify right side
73,679.09x = 4,081,838,739.14 - Step 5: Solve for x
x = 4,081,838,739.14/73,679.09 - Step 6: Final answer
x = 55,400.23
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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.