Finding the Fourth Proportional to 87,988.48, 121,424.96 and 47,702.14
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Solution
The fourth proportional to 87,988.48, 121,424.96 and 47,702.14 is: 65,829.42
Step by Step Solution
- Step 1: Write the proportion equation
87,988.48 : 121,424.96 = 47,702.14 : x - Step 2: Convert to fraction form
87,988.48/121,424.96 = 47,702.14/x - Step 3: Cross multiply
87,988.48x = 121,424.96 × 47,702.14 - Step 4: Simplify right side
87,988.48x = 5,792,230,441.41 - Step 5: Solve for x
x = 5,792,230,441.41/87,988.48 - Step 6: Final answer
x = 65,829.42
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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.