Finding the Fourth Proportional to 117,628.11, 162,340.70 and 69,881.63
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Solution
The fourth proportional to 117,628.11, 162,340.70 and 69,881.63 is: 96,444.90
Step by Step Solution
- Step 1: Write the proportion equation
117,628.11 : 162,340.70 = 69,881.63 : x - Step 2: Convert to fraction form
117,628.11/162,340.70 = 69,881.63/x - Step 3: Cross multiply
117,628.11x = 162,340.70 × 69,881.63 - Step 4: Simplify right side
117,628.11x = 11,344,631,570.23 - Step 5: Solve for x
x = 11,344,631,570.23/117,628.11 - Step 6: Final answer
x = 96,444.90
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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.