Finding the Fourth Proportional to 73,126.47, 109,689.18 and 20,535.99
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Solution
The fourth proportional to 73,126.47, 109,689.18 and 20,535.99 is: 30,803.84
Step by Step Solution
- Step 1: Write the proportion equation
73,126.47 : 109,689.18 = 20,535.99 : x - Step 2: Convert to fraction form
73,126.47/109,689.18 = 20,535.99/x - Step 3: Cross multiply
73,126.47x = 109,689.18 × 20,535.99 - Step 4: Simplify right side
73,126.47x = 2,252,575,903.59 - Step 5: Solve for x
x = 2,252,575,903.59/73,126.47 - Step 6: Final answer
x = 30,803.84
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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.