Finding the Fourth Proportional to 81,577.77, 112,612.64 and 76,470.99
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Solution
The fourth proportional to 81,577.77, 112,612.64 and 76,470.99 is: 105,563.07
Step by Step Solution
- Step 1: Write the proportion equation
81,577.77 : 112,612.64 = 76,470.99 : x - Step 2: Convert to fraction form
81,577.77/112,612.64 = 76,470.99/x - Step 3: Cross multiply
81,577.77x = 112,612.64 × 76,470.99 - Step 4: Simplify right side
81,577.77x = 8,611,599,695.43 - Step 5: Solve for x
x = 8,611,599,695.43/81,577.77 - Step 6: Final answer
x = 105,563.07
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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.