Finding the Fourth Proportional to 86,919.90, 130,379.84 and 55,951.98
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Solution
The fourth proportional to 86,919.90, 130,379.84 and 55,951.98 is: 83,927.96
Step by Step Solution
- Step 1: Write the proportion equation
86,919.90 : 130,379.84 = 55,951.98 : x - Step 2: Convert to fraction form
86,919.90/130,379.84 = 55,951.98/x - Step 3: Cross multiply
86,919.90x = 130,379.84 × 55,951.98 - Step 4: Simplify right side
86,919.90x = 7,295,010,200.08 - Step 5: Solve for x
x = 7,295,010,200.08/86,919.90 - Step 6: Final answer
x = 83,927.96
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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.