Finding the Fourth Proportional to 90,430.18, 135,662.28 and 36,398.99
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Solution
The fourth proportional to 90,430.18, 135,662.28 and 36,398.99 is: 54,605.33
Step by Step Solution
- Step 1: Write the proportion equation
90,430.18 : 135,662.28 = 36,398.99 : x - Step 2: Convert to fraction form
90,430.18/135,662.28 = 36,398.99/x - Step 3: Cross multiply
90,430.18x = 135,662.28 × 36,398.99 - Step 4: Simplify right side
90,430.18x = 4,937,969,791.10 - Step 5: Solve for x
x = 4,937,969,791.10/90,430.18 - Step 6: Final answer
x = 54,605.33
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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.