Finding the Fourth Proportional to 83,991.53, 125,372.87 and 74,027.32
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Solution
The fourth proportional to 83,991.53, 125,372.87 and 74,027.32 is: 110,499.45
Step by Step Solution
- Step 1: Write the proportion equation
83,991.53 : 125,372.87 = 74,027.32 : x - Step 2: Convert to fraction form
83,991.53/125,372.87 = 74,027.32/x - Step 3: Cross multiply
83,991.53x = 125,372.87 × 74,027.32 - Step 4: Simplify right side
83,991.53x = 9,281,017,566.81 - Step 5: Solve for x
x = 9,281,017,566.81/83,991.53 - Step 6: Final answer
x = 110,499.45
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.