Finding the Fourth Proportional to 87,864.19, 121,252.42 and 47,578.08
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Solution
The fourth proportional to 87,864.19, 121,252.42 and 47,578.08 is: 65,657.66
Step by Step Solution
- Step 1: Write the proportion equation
87,864.19 : 121,252.42 = 47,578.08 : x - Step 2: Convert to fraction form
87,864.19/121,252.42 = 47,578.08/x - Step 3: Cross multiply
87,864.19x = 121,252.42 × 47,578.08 - Step 4: Simplify right side
87,864.19x = 5,768,957,338.95 - Step 5: Solve for x
x = 5,768,957,338.95/87,864.19 - Step 6: Final answer
x = 65,657.66
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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.