Finding the Fourth Proportional to 78,294.24, 117,419.76 and 22,129.92
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Solution
The fourth proportional to 78,294.24, 117,419.76 and 22,129.92 is: 33,188.77
Step by Step Solution
- Step 1: Write the proportion equation
78,294.24 : 117,419.76 = 22,129.92 : x - Step 2: Convert to fraction form
78,294.24/117,419.76 = 22,129.92/x - Step 3: Cross multiply
78,294.24x = 117,419.76 × 22,129.92 - Step 4: Simplify right side
78,294.24x = 2,598,489,895.22 - Step 5: Solve for x
x = 2,598,489,895.22/78,294.24 - Step 6: Final answer
x = 33,188.77
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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.