Finding the Fourth Proportional to 76,483.44, 105,517.65 and 56,388.09
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Solution
The fourth proportional to 76,483.44, 105,517.65 and 56,388.09 is: 77,793.82
Step by Step Solution
- Step 1: Write the proportion equation
76,483.44 : 105,517.65 = 56,388.09 : x - Step 2: Convert to fraction form
76,483.44/105,517.65 = 56,388.09/x - Step 3: Cross multiply
76,483.44x = 105,517.65 × 56,388.09 - Step 4: Simplify right side
76,483.44x = 5,949,938,744.79 - Step 5: Solve for x
x = 5,949,938,744.79/76,483.44 - Step 6: Final answer
x = 77,793.82
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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.