Finding the Fourth Proportional to 75,674.28, 113,511.58 and 28,931.88
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Solution
The fourth proportional to 75,674.28, 113,511.58 and 28,931.88 is: 43,397.88
Step by Step Solution
- Step 1: Write the proportion equation
75,674.28 : 113,511.58 = 28,931.88 : x - Step 2: Convert to fraction form
75,674.28/113,511.58 = 28,931.88/x - Step 3: Cross multiply
75,674.28x = 113,511.58 × 28,931.88 - Step 4: Simplify right side
75,674.28x = 3,284,103,411.17 - Step 5: Solve for x
x = 3,284,103,411.17/75,674.28 - Step 6: Final answer
x = 43,397.88
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1.5x scale
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.