Finding the Fourth Proportional to 71,167.18, 106,747.12 and 21,247.70
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Solution
The fourth proportional to 71,167.18, 106,747.12 and 21,247.70 is: 31,870.46
Step by Step Solution
- Step 1: Write the proportion equation
71,167.18 : 106,747.12 = 21,247.70 : x - Step 2: Convert to fraction form
71,167.18/106,747.12 = 21,247.70/x - Step 3: Cross multiply
71,167.18x = 106,747.12 × 21,247.70 - Step 4: Simplify right side
71,167.18x = 2,268,130,781.62 - Step 5: Solve for x
x = 2,268,130,781.62/71,167.18 - Step 6: Final answer
x = 31,870.46
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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.