Finding the Fourth Proportional to 83,981.68, 126,003.21 and 39,023.80
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Solution
The fourth proportional to 83,981.68, 126,003.21 and 39,023.80 is: 58,549.96
Step by Step Solution
- Step 1: Write the proportion equation
83,981.68 : 126,003.21 = 39,023.80 : x - Step 2: Convert to fraction form
83,981.68/126,003.21 = 39,023.80/x - Step 3: Cross multiply
83,981.68x = 126,003.21 × 39,023.80 - Step 4: Simplify right side
83,981.68x = 4,917,124,066.40 - Step 5: Solve for x
x = 4,917,124,066.40/83,981.68 - Step 6: Final answer
x = 58,549.96
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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.