Finding the Fourth Proportional to 73,130.09, 109,686.62 and 20,544.08
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Solution
The fourth proportional to 73,130.09, 109,686.62 and 20,544.08 is: 30,813.72
Step by Step Solution
- Step 1: Write the proportion equation
73,130.09 : 109,686.62 = 20,544.08 : x - Step 2: Convert to fraction form
73,130.09/109,686.62 = 20,544.08/x - Step 3: Cross multiply
73,130.09x = 109,686.62 × 20,544.08 - Step 4: Simplify right side
73,130.09x = 2,253,410,045.06 - Step 5: Solve for x
x = 2,253,410,045.06/73,130.09 - Step 6: Final answer
x = 30,813.72
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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.