Finding the Fourth Proportional to 68,859.70, 103,313.85 and 66,429.70
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Solution
The fourth proportional to 68,859.70, 103,313.85 and 66,429.70 is: 99,667.99
Step by Step Solution
- Step 1: Write the proportion equation
68,859.70 : 103,313.85 = 66,429.70 : x - Step 2: Convert to fraction form
68,859.70/103,313.85 = 66,429.70/x - Step 3: Cross multiply
68,859.70x = 103,313.85 × 66,429.70 - Step 4: Simplify right side
68,859.70x = 6,863,108,061.35 - Step 5: Solve for x
x = 6,863,108,061.35/68,859.70 - Step 6: Final answer
x = 99,667.99
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1.5x scale
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.