Finding the Fourth Proportional to 77,564.28, 107,035.68 and 47,400.12
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Solution
The fourth proportional to 77,564.28, 107,035.68 and 47,400.12 is: 65,410.32
Step by Step Solution
- Step 1: Write the proportion equation
77,564.28 : 107,035.68 = 47,400.12 : x - Step 2: Convert to fraction form
77,564.28/107,035.68 = 47,400.12/x - Step 3: Cross multiply
77,564.28x = 107,035.68 × 47,400.12 - Step 4: Simplify right side
77,564.28x = 5,073,504,076.28 - Step 5: Solve for x
x = 5,073,504,076.28/77,564.28 - Step 6: Final answer
x = 65,410.32
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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.