Finding the Fourth Proportional to 81,348.29, 112,257.36 and 47,357.75
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Solution
The fourth proportional to 81,348.29, 112,257.36 and 47,357.75 is: 65,351.79
Step by Step Solution
- Step 1: Write the proportion equation
81,348.29 : 112,257.36 = 47,357.75 : x - Step 2: Convert to fraction form
81,348.29/112,257.36 = 47,357.75/x - Step 3: Cross multiply
81,348.29x = 112,257.36 × 47,357.75 - Step 4: Simplify right side
81,348.29x = 5,316,255,990.54 - Step 5: Solve for x
x = 5,316,255,990.54/81,348.29 - Step 6: Final answer
x = 65,351.79
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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.