Finding the Fourth Proportional to 79,990.84, 110,347.38 and 47,702.68
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Solution
The fourth proportional to 79,990.84, 110,347.38 and 47,702.68 is: 65,805.86
Step by Step Solution
- Step 1: Write the proportion equation
79,990.84 : 110,347.38 = 47,702.68 : x - Step 2: Convert to fraction form
79,990.84/110,347.38 = 47,702.68/x - Step 3: Cross multiply
79,990.84x = 110,347.38 × 47,702.68 - Step 4: Simplify right side
79,990.84x = 5,263,865,756.98 - Step 5: Solve for x
x = 5,263,865,756.98/79,990.84 - Step 6: Final answer
x = 65,805.86
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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.