Finding the Fourth Proportional to 75,476.40, 113,214.16 and 19,316.40
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Solution
The fourth proportional to 75,476.40, 113,214.16 and 19,316.40 is: 28,974.49
Step by Step Solution
- Step 1: Write the proportion equation
75,476.40 : 113,214.16 = 19,316.40 : x - Step 2: Convert to fraction form
75,476.40/113,214.16 = 19,316.40/x - Step 3: Cross multiply
75,476.40x = 113,214.16 × 19,316.40 - Step 4: Simplify right side
75,476.40x = 2,186,890,000.22 - Step 5: Solve for x
x = 2,186,890,000.22/75,476.40 - Step 6: Final answer
x = 28,974.49
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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.