Finding the Fourth Proportional to 76,107.12, 105,024.10 and 42,114.99
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Solution
The fourth proportional to 76,107.12, 105,024.10 and 42,114.99 is: 58,116.62
Step by Step Solution
- Step 1: Write the proportion equation
76,107.12 : 105,024.10 = 42,114.99 : x - Step 2: Convert to fraction form
76,107.12/105,024.10 = 42,114.99/x - Step 3: Cross multiply
76,107.12x = 105,024.10 × 42,114.99 - Step 4: Simplify right side
76,107.12x = 4,423,088,921.26 - Step 5: Solve for x
x = 4,423,088,921.26/76,107.12 - Step 6: Final answer
x = 58,116.62
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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.