Finding the Fourth Proportional to 91,987.68, 137,995.84 and 29,664.48
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Solution
The fourth proportional to 91,987.68, 137,995.84 and 29,664.48 is: 44,501.34
Step by Step Solution
- Step 1: Write the proportion equation
91,987.68 : 137,995.84 = 29,664.48 : x - Step 2: Convert to fraction form
91,987.68/137,995.84 = 29,664.48/x - Step 3: Cross multiply
91,987.68x = 137,995.84 × 29,664.48 - Step 4: Simplify right side
91,987.68x = 4,093,574,835.76 - Step 5: Solve for x
x = 4,093,574,835.76/91,987.68 - Step 6: Final answer
x = 44,501.34
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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.