Finding the Fourth Proportional to 67,991.75, 101,987.19 and 26,438.75
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Solution
The fourth proportional to 67,991.75, 101,987.19 and 26,438.75 is: 39,657.95
Step by Step Solution
- Step 1: Write the proportion equation
67,991.75 : 101,987.19 = 26,438.75 : x - Step 2: Convert to fraction form
67,991.75/101,987.19 = 26,438.75/x - Step 3: Cross multiply
67,991.75x = 101,987.19 × 26,438.75 - Step 4: Simplify right side
67,991.75x = 2,696,413,309.68 - Step 5: Solve for x
x = 2,696,413,309.68/67,991.75 - Step 6: Final answer
x = 39,657.95
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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.