Finding the Fourth Proportional to 76,877.29, 115,320.03 and 72,670.05
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Solution
The fourth proportional to 76,877.29, 115,320.03 and 72,670.05 is: 109,008.95
Step by Step Solution
- Step 1: Write the proportion equation
76,877.29 : 115,320.03 = 72,670.05 : x - Step 2: Convert to fraction form
76,877.29/115,320.03 = 72,670.05/x - Step 3: Cross multiply
76,877.29x = 115,320.03 × 72,670.05 - Step 4: Simplify right side
76,877.29x = 8,380,312,346.10 - Step 5: Solve for x
x = 8,380,312,346.10/76,877.29 - Step 6: Final answer
x = 109,008.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.