Finding the Fourth Proportional to 73,887.20, 110,845.20 and 31,767.20
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Solution
The fourth proportional to 73,887.20, 110,845.20 and 31,767.20 is: 47,656.99
Step by Step Solution
- Step 1: Write the proportion equation
73,887.20 : 110,845.20 = 31,767.20 : x - Step 2: Convert to fraction form
73,887.20/110,845.20 = 31,767.20/x - Step 3: Cross multiply
73,887.20x = 110,845.20 × 31,767.20 - Step 4: Simplify right side
73,887.20x = 3,521,241,637.44 - Step 5: Solve for x
x = 3,521,241,637.44/73,887.20 - Step 6: Final answer
x = 47,656.99
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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.