Finding the Fourth Proportional to 76,205.20, 105,163.08 and 42,671.44
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Solution
The fourth proportional to 76,205.20, 105,163.08 and 42,671.44 is: 58,886.53
Step by Step Solution
- Step 1: Write the proportion equation
76,205.20 : 105,163.08 = 42,671.44 : x - Step 2: Convert to fraction form
76,205.20/105,163.08 = 42,671.44/x - Step 3: Cross multiply
76,205.20x = 105,163.08 × 42,671.44 - Step 4: Simplify right side
76,205.20x = 4,487,460,058.44 - Step 5: Solve for x
x = 4,487,460,058.44/76,205.20 - Step 6: Final answer
x = 58,886.53
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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.