Finding the Fourth Proportional to 76,125.12, 105,052.84 and 42,135.96
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Solution
The fourth proportional to 76,125.12, 105,052.84 and 42,135.96 is: 58,147.72
Step by Step Solution
- Step 1: Write the proportion equation
76,125.12 : 105,052.84 = 42,135.96 : x - Step 2: Convert to fraction form
76,125.12/105,052.84 = 42,135.96/x - Step 3: Cross multiply
76,125.12x = 105,052.84 × 42,135.96 - Step 4: Simplify right side
76,125.12x = 4,426,502,264.13 - Step 5: Solve for x
x = 4,426,502,264.13/76,125.12 - Step 6: Final answer
x = 58,147.72
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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.