Finding the Fourth Proportional to 76,920.98, 106,091.25 and 48,616.34
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Solution
The fourth proportional to 76,920.98, 106,091.25 and 48,616.34 is: 67,052.82
Step by Step Solution
- Step 1: Write the proportion equation
76,920.98 : 106,091.25 = 48,616.34 : x - Step 2: Convert to fraction form
76,920.98/106,091.25 = 48,616.34/x - Step 3: Cross multiply
76,920.98x = 106,091.25 × 48,616.34 - Step 4: Simplify right side
76,920.98x = 5,157,768,281.03 - Step 5: Solve for x
x = 5,157,768,281.03/76,920.98 - Step 6: Final answer
x = 67,052.82
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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.