Finding the Fourth Proportional to 73,091.74, 109,681.35 and 31,538.74
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Solution
The fourth proportional to 73,091.74, 109,681.35 and 31,538.74 is: 47,326.99
Step by Step Solution
- Step 1: Write the proportion equation
73,091.74 : 109,681.35 = 31,538.74 : x - Step 2: Convert to fraction form
73,091.74/109,681.35 = 31,538.74/x - Step 3: Cross multiply
73,091.74x = 109,681.35 × 31,538.74 - Step 4: Simplify right side
73,091.74x = 3,459,211,923.91 - Step 5: Solve for x
x = 3,459,211,923.91/73,091.74 - Step 6: Final answer
x = 47,326.99
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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.