Finding the Fourth Proportional to 81,088.97, 121,616.54 and 21,910.77
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Solution
The fourth proportional to 81,088.97, 121,616.54 and 21,910.77 is: 32,861.59
Step by Step Solution
- Step 1: Write the proportion equation
81,088.97 : 121,616.54 = 21,910.77 : x - Step 2: Convert to fraction form
81,088.97/121,616.54 = 21,910.77/x - Step 3: Cross multiply
81,088.97x = 121,616.54 × 21,910.77 - Step 4: Simplify right side
81,088.97x = 2,664,712,008.75 - Step 5: Solve for x
x = 2,664,712,008.75/81,088.97 - Step 6: Final answer
x = 32,861.59
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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.