Finding the Fourth Proportional to 90,013.74, 124,216.56 and 49,721.00
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Solution
The fourth proportional to 90,013.74, 124,216.56 and 49,721.00 is: 68,613.65
Step by Step Solution
- Step 1: Write the proportion equation
90,013.74 : 124,216.56 = 49,721.00 : x - Step 2: Convert to fraction form
90,013.74/124,216.56 = 49,721.00/x - Step 3: Cross multiply
90,013.74x = 124,216.56 × 49,721.00 - Step 4: Simplify right side
90,013.74x = 6,176,170,958.68 - Step 5: Solve for x
x = 6,176,170,958.68/90,013.74 - Step 6: Final answer
x = 68,613.65
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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.