Finding the Fourth Proportional to 97,919.74, 135,128.91 and 55,486.36
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Solution
The fourth proportional to 97,919.74, 135,128.91 and 55,486.36 is: 76,570.99
Step by Step Solution
- Step 1: Write the proportion equation
97,919.74 : 135,128.91 = 55,486.36 : x - Step 2: Convert to fraction form
97,919.74/135,128.91 = 55,486.36/x - Step 3: Cross multiply
97,919.74x = 135,128.91 × 55,486.36 - Step 4: Simplify right side
97,919.74x = 7,497,811,346.67 - Step 5: Solve for x
x = 7,497,811,346.67/97,919.74 - Step 6: Final answer
x = 76,570.99
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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.