Finding the Fourth Proportional to 86,619.95, 129,911.70 and 36,701.68
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Solution
The fourth proportional to 86,619.95, 129,911.70 and 36,701.68 is: 55,044.80
Step by Step Solution
- Step 1: Write the proportion equation
86,619.95 : 129,911.70 = 36,701.68 : x - Step 2: Convert to fraction form
86,619.95/129,911.70 = 36,701.68/x - Step 3: Cross multiply
86,619.95x = 129,911.70 × 36,701.68 - Step 4: Simplify right side
86,619.95x = 4,767,977,641.66 - Step 5: Solve for x
x = 4,767,977,641.66/86,619.95 - Step 6: Final answer
x = 55,044.80
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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.