Finding the Fourth Proportional to 99,783.24, 137,699.64 and 54,461.94
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Solution
The fourth proportional to 99,783.24, 137,699.64 and 54,461.94 is: 75,156.81
Step by Step Solution
- Step 1: Write the proportion equation
99,783.24 : 137,699.64 = 54,461.94 : x - Step 2: Convert to fraction form
99,783.24/137,699.64 = 54,461.94/x - Step 3: Cross multiply
99,783.24x = 137,699.64 × 54,461.94 - Step 4: Simplify right side
99,783.24x = 7,499,389,531.70 - Step 5: Solve for x
x = 7,499,389,531.70/99,783.24 - Step 6: Final answer
x = 75,156.81
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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.