Finding the Fourth Proportional to 90,440.26, 135,001.70 and 83,769.91
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Solution
The fourth proportional to 90,440.26, 135,001.70 and 83,769.91 is: 125,044.75
Step by Step Solution
- Step 1: Write the proportion equation
90,440.26 : 135,001.70 = 83,769.91 : x - Step 2: Convert to fraction form
90,440.26/135,001.70 = 83,769.91/x - Step 3: Cross multiply
90,440.26x = 135,001.70 × 83,769.91 - Step 4: Simplify right side
90,440.26x = 11,309,079,816.63 - Step 5: Solve for x
x = 11,309,079,816.63/90,440.26 - Step 6: Final answer
x = 125,044.75
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.