Finding the Fourth Proportional to 97,987.75, 135,219.18 and 57,703.21
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Solution
The fourth proportional to 97,987.75, 135,219.18 and 57,703.21 is: 79,628.12
Step by Step Solution
- Step 1: Write the proportion equation
97,987.75 : 135,219.18 = 57,703.21 : x - Step 2: Convert to fraction form
97,987.75/135,219.18 = 57,703.21/x - Step 3: Cross multiply
97,987.75x = 135,219.18 × 57,703.21 - Step 4: Simplify right side
97,987.75x = 7,802,580,739.57 - Step 5: Solve for x
x = 7,802,580,739.57/97,987.75 - Step 6: Final answer
x = 79,628.12
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.