Finding the Fourth Proportional to 77,861.86, 116,829.74 and 40,401.99
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Solution
The fourth proportional to 77,861.86, 116,829.74 and 40,401.99 is: 60,622.16
Step by Step Solution
- Step 1: Write the proportion equation
77,861.86 : 116,829.74 = 40,401.99 : x - Step 2: Convert to fraction form
77,861.86/116,829.74 = 40,401.99/x - Step 3: Cross multiply
77,861.86x = 116,829.74 × 40,401.99 - Step 4: Simplify right side
77,861.86x = 4,720,154,088.19 - Step 5: Solve for x
x = 4,720,154,088.19/77,861.86 - Step 6: Final answer
x = 60,622.16
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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.