Finding the Fourth Proportional to 71,312.24, 106,960.44 and 18,727.76
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Solution
The fourth proportional to 71,312.24, 106,960.44 and 18,727.76 is: 28,089.56
Step by Step Solution
- Step 1: Write the proportion equation
71,312.24 : 106,960.44 = 18,727.76 : x - Step 2: Convert to fraction form
71,312.24/106,960.44 = 18,727.76/x - Step 3: Cross multiply
71,312.24x = 106,960.44 × 18,727.76 - Step 4: Simplify right side
71,312.24x = 2,003,129,449.81 - Step 5: Solve for x
x = 2,003,129,449.81/71,312.24 - Step 6: Final answer
x = 28,089.56
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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.