Finding the Fourth Proportional to 76,108.12, 105,025.48 and 42,115.99
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Solution
The fourth proportional to 76,108.12, 105,025.48 and 42,115.99 is: 58,118.00
Step by Step Solution
- Step 1: Write the proportion equation
76,108.12 : 105,025.48 = 42,115.99 : x - Step 2: Convert to fraction form
76,108.12/105,025.48 = 42,115.99/x - Step 3: Cross multiply
76,108.12x = 105,025.48 × 42,115.99 - Step 4: Simplify right side
76,108.12x = 4,423,252,065.43 - Step 5: Solve for x
x = 4,423,252,065.43/76,108.12 - Step 6: Final answer
x = 58,118.00
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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.