Finding the Fourth Proportional to 79,551.28, 119,324.21 and 20,387.53
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Solution
The fourth proportional to 79,551.28, 119,324.21 and 20,387.53 is: 30,580.59
Step by Step Solution
- Step 1: Write the proportion equation
79,551.28 : 119,324.21 = 20,387.53 : x - Step 2: Convert to fraction form
79,551.28/119,324.21 = 20,387.53/x - Step 3: Cross multiply
79,551.28x = 119,324.21 × 20,387.53 - Step 4: Simplify right side
79,551.28x = 2,432,725,314.48 - Step 5: Solve for x
x = 2,432,725,314.48/79,551.28 - Step 6: Final answer
x = 30,580.59
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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.