Finding the Fourth Proportional to 71,348.18, 107,023.08 and 18,762.98
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Solution
The fourth proportional to 71,348.18, 107,023.08 and 18,762.98 is: 28,144.68
Step by Step Solution
- Step 1: Write the proportion equation
71,348.18 : 107,023.08 = 18,762.98 : x - Step 2: Convert to fraction form
71,348.18/107,023.08 = 18,762.98/x - Step 3: Cross multiply
71,348.18x = 107,023.08 × 18,762.98 - Step 4: Simplify right side
71,348.18x = 2,008,071,909.58 - Step 5: Solve for x
x = 2,008,071,909.58/71,348.18 - Step 6: Final answer
x = 28,144.68
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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.