Finding the Fourth Proportional to 86,381.70, 129,590.73 and 48,959.70
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Solution
The fourth proportional to 86,381.70, 129,590.73 and 48,959.70 is: 73,449.85
Step by Step Solution
- Step 1: Write the proportion equation
86,381.70 : 129,590.73 = 48,959.70 : x - Step 2: Convert to fraction form
86,381.70/129,590.73 = 48,959.70/x - Step 3: Cross multiply
86,381.70x = 129,590.73 × 48,959.70 - Step 4: Simplify right side
86,381.70x = 6,344,723,263.58 - Step 5: Solve for x
x = 6,344,723,263.58/86,381.70 - Step 6: Final answer
x = 73,449.85
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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.