Finding the Fourth Proportional to 76,994.22, 106,215.48 and 48,299.70
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Solution
The fourth proportional to 76,994.22, 106,215.48 and 48,299.70 is: 66,630.66
Step by Step Solution
- Step 1: Write the proportion equation
76,994.22 : 106,215.48 = 48,299.70 : x - Step 2: Convert to fraction form
76,994.22/106,215.48 = 48,299.70/x - Step 3: Cross multiply
76,994.22x = 106,215.48 × 48,299.70 - Step 4: Simplify right side
76,994.22x = 5,130,175,819.36 - Step 5: Solve for x
x = 5,130,175,819.36/76,994.22 - Step 6: Final answer
x = 66,630.66
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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.