Finding the Fourth Proportional to 72,376.46, 108,564.74 and 19,781.99
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Solution
The fourth proportional to 72,376.46, 108,564.74 and 19,781.99 is: 29,673.00
Step by Step Solution
- Step 1: Write the proportion equation
72,376.46 : 108,564.74 = 19,781.99 : x - Step 2: Convert to fraction form
72,376.46/108,564.74 = 19,781.99/x - Step 3: Cross multiply
72,376.46x = 108,564.74 × 19,781.99 - Step 4: Simplify right side
72,376.46x = 2,147,626,502.12 - Step 5: Solve for x
x = 2,147,626,502.12/72,376.46 - Step 6: Final answer
x = 29,673.00
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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.