Finding the Fourth Proportional to 71,585.80, 107,368.89 and 39,623.99
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Solution
The fourth proportional to 71,585.80, 107,368.89 and 39,623.99 is: 59,430.55
Step by Step Solution
- Step 1: Write the proportion equation
71,585.80 : 107,368.89 = 39,623.99 : x - Step 2: Convert to fraction form
71,585.80/107,368.89 = 39,623.99/x - Step 3: Cross multiply
71,585.80x = 107,368.89 × 39,623.99 - Step 4: Simplify right side
71,585.80x = 4,254,383,823.67 - Step 5: Solve for x
x = 4,254,383,823.67/71,585.80 - Step 6: Final answer
x = 59,430.55
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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.