Finding the Fourth Proportional to 81,170.64, 121,673.88 and 38,989.08
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Solution
The fourth proportional to 81,170.64, 121,673.88 and 38,989.08 is: 58,444.19
Step by Step Solution
- Step 1: Write the proportion equation
81,170.64 : 121,673.88 = 38,989.08 : x - Step 2: Convert to fraction form
81,170.64/121,673.88 = 38,989.08/x - Step 3: Cross multiply
81,170.64x = 121,673.88 × 38,989.08 - Step 4: Simplify right side
81,170.64x = 4,743,952,641.23 - Step 5: Solve for x
x = 4,743,952,641.23/81,170.64 - Step 6: Final answer
x = 58,444.19
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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.