Finding the Fourth Proportional to 72,378.46, 108,567.74 and 19,783.99
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Solution
The fourth proportional to 72,378.46, 108,567.74 and 19,783.99 is: 29,676.00
Step by Step Solution
- Step 1: Write the proportion equation
72,378.46 : 108,567.74 = 19,783.99 : x - Step 2: Convert to fraction form
72,378.46/108,567.74 = 19,783.99/x - Step 3: Cross multiply
72,378.46x = 108,567.74 × 19,783.99 - Step 4: Simplify right side
72,378.46x = 2,147,903,082.48 - Step 5: Solve for x
x = 2,147,903,082.48/72,378.46 - Step 6: Final answer
x = 29,676.00
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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.