Finding the Fourth Proportional to 75,430.75, 113,146.12 and 19,270.98
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Solution
The fourth proportional to 75,430.75, 113,146.12 and 19,270.98 is: 28,906.47
Step by Step Solution
- Step 1: Write the proportion equation
75,430.75 : 113,146.12 = 19,270.98 : x - Step 2: Convert to fraction form
75,430.75/113,146.12 = 19,270.98/x - Step 3: Cross multiply
75,430.75x = 113,146.12 × 19,270.98 - Step 4: Simplify right side
75,430.75x = 2,180,436,615.60 - Step 5: Solve for x
x = 2,180,436,615.60/75,430.75 - Step 6: Final answer
x = 28,906.47
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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.