Finding the Fourth Proportional to 90,625.08, 135,862.77 and 39,988.05
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Solution
The fourth proportional to 90,625.08, 135,862.77 and 39,988.05 is: 59,949.05
Step by Step Solution
- Step 1: Write the proportion equation
90,625.08 : 135,862.77 = 39,988.05 : x - Step 2: Convert to fraction form
90,625.08/135,862.77 = 39,988.05/x - Step 3: Cross multiply
90,625.08x = 135,862.77 × 39,988.05 - Step 4: Simplify right side
90,625.08x = 5,432,887,239.90 - Step 5: Solve for x
x = 5,432,887,239.90/90,625.08 - Step 6: Final answer
x = 59,949.05
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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.