Finding the Fourth Proportional to 75,620.20, 113,430.30 and 65,122.60
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Solution
The fourth proportional to 75,620.20, 113,430.30 and 65,122.60 is: 97,683.90
Step by Step Solution
- Step 1: Write the proportion equation
75,620.20 : 113,430.30 = 65,122.60 : x - Step 2: Convert to fraction form
75,620.20/113,430.30 = 65,122.60/x - Step 3: Cross multiply
75,620.20x = 113,430.30 × 65,122.60 - Step 4: Simplify right side
75,620.20x = 7,386,876,054.78 - Step 5: Solve for x
x = 7,386,876,054.78/75,620.20 - Step 6: Final answer
x = 97,683.90
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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.