Finding the Fourth Proportional to 79,985.70, 110,330.21 and 47,697.68
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Solution
The fourth proportional to 79,985.70, 110,330.21 and 47,697.68 is: 65,792.94
Step by Step Solution
- Step 1: Write the proportion equation
79,985.70 : 110,330.21 = 47,697.68 : x - Step 2: Convert to fraction form
79,985.70/110,330.21 = 47,697.68/x - Step 3: Cross multiply
79,985.70x = 110,330.21 × 47,697.68 - Step 4: Simplify right side
79,985.70x = 5,262,494,260.77 - Step 5: Solve for x
x = 5,262,494,260.77/79,985.70 - Step 6: Final answer
x = 65,792.94
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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.