Finding the Fourth Proportional to 73,809.20, 110,757.54 and 69,139.02
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Solution
The fourth proportional to 73,809.20, 110,757.54 and 69,139.02 is: 103,749.50
Step by Step Solution
- Step 1: Write the proportion equation
73,809.20 : 110,757.54 = 69,139.02 : x - Step 2: Convert to fraction form
73,809.20/110,757.54 = 69,139.02/x - Step 3: Cross multiply
73,809.20x = 110,757.54 × 69,139.02 - Step 4: Simplify right side
73,809.20x = 7,657,667,773.21 - Step 5: Solve for x
x = 7,657,667,773.21/73,809.20 - Step 6: Final answer
x = 103,749.50
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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.