Finding the Fourth Proportional to 73,639.13, 101,621.99 and 40,105.13
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Solution
The fourth proportional to 73,639.13, 101,621.99 and 40,105.13 is: 55,345.07
Step by Step Solution
- Step 1: Write the proportion equation
73,639.13 : 101,621.99 = 40,105.13 : x - Step 2: Convert to fraction form
73,639.13/101,621.99 = 40,105.13/x - Step 3: Cross multiply
73,639.13x = 101,621.99 × 40,105.13 - Step 4: Simplify right side
73,639.13x = 4,075,562,711.96 - Step 5: Solve for x
x = 4,075,562,711.96/73,639.13 - Step 6: Final answer
x = 55,345.07
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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.