Finding the Fourth Proportional to 74,102.88, 102,261.12 and 40,110.60
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Solution
The fourth proportional to 74,102.88, 102,261.12 and 40,110.60 is: 55,352.17
Step by Step Solution
- Step 1: Write the proportion equation
74,102.88 : 102,261.12 = 40,110.60 : x - Step 2: Convert to fraction form
74,102.88/102,261.12 = 40,110.60/x - Step 3: Cross multiply
74,102.88x = 102,261.12 × 40,110.60 - Step 4: Simplify right side
74,102.88x = 4,101,754,879.87 - Step 5: Solve for x
x = 4,101,754,879.87/74,102.88 - Step 6: Final answer
x = 55,352.17
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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.