Finding the Fourth Proportional to 79,216.26, 109,315.20 and 47,402.70
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Solution
The fourth proportional to 79,216.26, 109,315.20 and 47,402.70 is: 65,413.79
Step by Step Solution
- Step 1: Write the proportion equation
79,216.26 : 109,315.20 = 47,402.70 : x - Step 2: Convert to fraction form
79,216.26/109,315.20 = 47,402.70/x - Step 3: Cross multiply
79,216.26x = 109,315.20 × 47,402.70 - Step 4: Simplify right side
79,216.26x = 5,181,835,631.04 - Step 5: Solve for x
x = 5,181,835,631.04/79,216.26 - Step 6: Final answer
x = 65,413.79
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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.