Finding the Fourth Proportional to 78,354.84, 108,129.78 and 44,820.84
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Solution
The fourth proportional to 78,354.84, 108,129.78 and 44,820.84 is: 61,852.82
Step by Step Solution
- Step 1: Write the proportion equation
78,354.84 : 108,129.78 = 44,820.84 : x - Step 2: Convert to fraction form
78,354.84/108,129.78 = 44,820.84/x - Step 3: Cross multiply
78,354.84x = 108,129.78 × 44,820.84 - Step 4: Simplify right side
78,354.84x = 4,846,467,568.62 - Step 5: Solve for x
x = 4,846,467,568.62/78,354.84 - Step 6: Final answer
x = 61,852.82
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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.