Finding the Fourth Proportional to 72,431.40, 108,630.49 and 19,844.99
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Solution
The fourth proportional to 72,431.40, 108,630.49 and 19,844.99 is: 29,762.93
Step by Step Solution
- Step 1: Write the proportion equation
72,431.40 : 108,630.49 = 19,844.99 : x - Step 2: Convert to fraction form
72,431.40/108,630.49 = 19,844.99/x - Step 3: Cross multiply
72,431.40x = 108,630.49 × 19,844.99 - Step 4: Simplify right side
72,431.40x = 2,155,770,394.98 - Step 5: Solve for x
x = 2,155,770,394.98/72,431.40 - Step 6: Final answer
x = 29,762.93
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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.