Finding the Fourth Proportional to 77,311.29, 106,689.99 and 43,319.85
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Solution
The fourth proportional to 77,311.29, 106,689.99 and 43,319.85 is: 59,781.62
Step by Step Solution
- Step 1: Write the proportion equation
77,311.29 : 106,689.99 = 43,319.85 : x - Step 2: Convert to fraction form
77,311.29/106,689.99 = 43,319.85/x - Step 3: Cross multiply
77,311.29x = 106,689.99 × 43,319.85 - Step 4: Simplify right side
77,311.29x = 4,621,794,363.30 - Step 5: Solve for x
x = 4,621,794,363.30/77,311.29 - Step 6: Final answer
x = 59,781.62
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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.