Finding the Fourth Proportional to 74,553.76, 102,883.80 and 42,721.84
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Solution
The fourth proportional to 74,553.76, 102,883.80 and 42,721.84 is: 58,955.92
Step by Step Solution
- Step 1: Write the proportion equation
74,553.76 : 102,883.80 = 42,721.84 : x - Step 2: Convert to fraction form
74,553.76/102,883.80 = 42,721.84/x - Step 3: Cross multiply
74,553.76x = 102,883.80 × 42,721.84 - Step 4: Simplify right side
74,553.76x = 4,395,385,242.19 - Step 5: Solve for x
x = 4,395,385,242.19/74,553.76 - Step 6: Final answer
x = 58,955.92
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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.