Finding the Fourth Proportional to 79,953.92, 120,030.24 and 51,781.76
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Solution
The fourth proportional to 79,953.92, 120,030.24 and 51,781.76 is: 77,736.99
Step by Step Solution
- Step 1: Write the proportion equation
79,953.92 : 120,030.24 = 51,781.76 : x - Step 2: Convert to fraction form
79,953.92/120,030.24 = 51,781.76/x - Step 3: Cross multiply
79,953.92x = 120,030.24 × 51,781.76 - Step 4: Simplify right side
79,953.92x = 6,215,377,080.42 - Step 5: Solve for x
x = 6,215,377,080.42/79,953.92 - Step 6: Final answer
x = 77,736.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.