Finding the Fourth Proportional to 90,691.70, 125,189.42 and 60,465.99
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Solution
The fourth proportional to 90,691.70, 125,189.42 and 60,465.99 is: 83,466.32
Step by Step Solution
- Step 1: Write the proportion equation
90,691.70 : 125,189.42 = 60,465.99 : x - Step 2: Convert to fraction form
90,691.70/125,189.42 = 60,465.99/x - Step 3: Cross multiply
90,691.70x = 125,189.42 × 60,465.99 - Step 4: Simplify right side
90,691.70x = 7,569,701,915.50 - Step 5: Solve for x
x = 7,569,701,915.50/90,691.70 - Step 6: Final answer
x = 83,466.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.