Finding the Fourth Proportional to 76,699.54, 105,878.02 and 51,563.62
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Solution
The fourth proportional to 76,699.54, 105,878.02 and 51,563.62 is: 71,179.75
Step by Step Solution
- Step 1: Write the proportion equation
76,699.54 : 105,878.02 = 51,563.62 : x - Step 2: Convert to fraction form
76,699.54/105,878.02 = 51,563.62/x - Step 3: Cross multiply
76,699.54x = 105,878.02 × 51,563.62 - Step 4: Simplify right side
76,699.54x = 5,459,453,460.24 - Step 5: Solve for x
x = 5,459,453,460.24/76,699.54 - Step 6: Final answer
x = 71,179.75
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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.