Finding the Fourth Proportional to 81,432.50, 112,383.36 and 47,904.98
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Solution
The fourth proportional to 81,432.50, 112,383.36 and 47,904.98 is: 66,112.70
Step by Step Solution
- Step 1: Write the proportion equation
81,432.50 : 112,383.36 = 47,904.98 : x - Step 2: Convert to fraction form
81,432.50/112,383.36 = 47,904.98/x - Step 3: Cross multiply
81,432.50x = 112,383.36 × 47,904.98 - Step 4: Simplify right side
81,432.50x = 5,383,722,613.13 - Step 5: Solve for x
x = 5,383,722,613.13/81,432.50 - Step 6: Final answer
x = 66,112.70
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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.