Finding the Fourth Proportional to 79,503.18, 109,707.39 and 47,689.62
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Solution
The fourth proportional to 79,503.18, 109,707.39 and 47,689.62 is: 65,807.48
Step by Step Solution
- Step 1: Write the proportion equation
79,503.18 : 109,707.39 = 47,689.62 : x - Step 2: Convert to fraction form
79,503.18/109,707.39 = 47,689.62/x - Step 3: Cross multiply
79,503.18x = 109,707.39 × 47,689.62 - Step 4: Simplify right side
79,503.18x = 5,231,903,740.29 - Step 5: Solve for x
x = 5,231,903,740.29/79,503.18 - Step 6: Final answer
x = 65,807.48
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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.