Finding the Fourth Proportional to 76,512.12, 105,585.35 and 42,519.99
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Solution
The fourth proportional to 76,512.12, 105,585.35 and 42,519.99 is: 58,676.82
Step by Step Solution
- Step 1: Write the proportion equation
76,512.12 : 105,585.35 = 42,519.99 : x - Step 2: Convert to fraction form
76,512.12/105,585.35 = 42,519.99/x - Step 3: Cross multiply
76,512.12x = 105,585.35 × 42,519.99 - Step 4: Simplify right side
76,512.12x = 4,489,488,026.15 - Step 5: Solve for x
x = 4,489,488,026.15/76,512.12 - Step 6: Final answer
x = 58,676.82
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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.