Finding the Fourth Proportional to 81,148.74, 121,823.34 and 38,494.95
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Solution
The fourth proportional to 81,148.74, 121,823.34 and 38,494.95 is: 57,789.97
Step by Step Solution
- Step 1: Write the proportion equation
81,148.74 : 121,823.34 = 38,494.95 : x - Step 2: Convert to fraction form
81,148.74/121,823.34 = 38,494.95/x - Step 3: Cross multiply
81,148.74x = 121,823.34 × 38,494.95 - Step 4: Simplify right side
81,148.74x = 4,689,583,382.13 - Step 5: Solve for x
x = 4,689,583,382.13/81,148.74 - Step 6: Final answer
x = 57,789.97
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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.