Finding the Fourth Proportional to 90,079.19, 124,307.09 and 49,791.92
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Solution
The fourth proportional to 90,079.19, 124,307.09 and 49,791.92 is: 68,711.63
Step by Step Solution
- Step 1: Write the proportion equation
90,079.19 : 124,307.09 = 49,791.92 : x - Step 2: Convert to fraction form
90,079.19/124,307.09 = 49,791.92/x - Step 3: Cross multiply
90,079.19x = 124,307.09 × 49,791.92 - Step 4: Simplify right side
90,079.19x = 6,189,487,810.22 - Step 5: Solve for x
x = 6,189,487,810.22/90,079.19 - Step 6: Final answer
x = 68,711.63
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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.