Finding the Fourth Proportional to 77,107.32, 115,827.90 and 65,285.18
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Solution
The fourth proportional to 77,107.32, 115,827.90 and 65,285.18 is: 98,069.09
Step by Step Solution
- Step 1: Write the proportion equation
77,107.32 : 115,827.90 = 65,285.18 : x - Step 2: Convert to fraction form
77,107.32/115,827.90 = 65,285.18/x - Step 3: Cross multiply
77,107.32x = 115,827.90 × 65,285.18 - Step 4: Simplify right side
77,107.32x = 7,561,844,721.38 - Step 5: Solve for x
x = 7,561,844,721.38/77,107.32 - Step 6: Final answer
x = 98,069.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.