Finding the Fourth Proportional to 77,790.07, 107,352.44 and 47,574.84
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Solution
The fourth proportional to 77,790.07, 107,352.44 and 47,574.84 is: 65,654.59
Step by Step Solution
- Step 1: Write the proportion equation
77,790.07 : 107,352.44 = 47,574.84 : x - Step 2: Convert to fraction form
77,790.07/107,352.44 = 47,574.84/x - Step 3: Cross multiply
77,790.07x = 107,352.44 × 47,574.84 - Step 4: Simplify right side
77,790.07x = 5,107,275,499.71 - Step 5: Solve for x
x = 5,107,275,499.71/77,790.07 - Step 6: Final answer
x = 65,654.59
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1.5x scale
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.