Finding the Fourth Proportional to 87,774.96, 131,631.30 and 31,599.99
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Solution
The fourth proportional to 87,774.96, 131,631.30 and 31,599.99 is: 47,388.77
Step by Step Solution
- Step 1: Write the proportion equation
87,774.96 : 131,631.30 = 31,599.99 : x - Step 2: Convert to fraction form
87,774.96/131,631.30 = 31,599.99/x - Step 3: Cross multiply
87,774.96x = 131,631.30 × 31,599.99 - Step 4: Simplify right side
87,774.96x = 4,159,547,297.24 - Step 5: Solve for x
x = 4,159,547,297.24/87,774.96 - Step 6: Final answer
x = 47,388.77
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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.