Finding the Fourth Proportional to 81,512.91, 122,088.74 and 62,654.09
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Solution
The fourth proportional to 81,512.91, 122,088.74 and 62,654.09 is: 93,842.29
Step by Step Solution
- Step 1: Write the proportion equation
81,512.91 : 122,088.74 = 62,654.09 : x - Step 2: Convert to fraction form
81,512.91/122,088.74 = 62,654.09/x - Step 3: Cross multiply
81,512.91x = 122,088.74 × 62,654.09 - Step 4: Simplify right side
81,512.91x = 7,649,357,980.23 - Step 5: Solve for x
x = 7,649,357,980.23/81,512.91 - Step 6: Final answer
x = 93,842.29
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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.