Finding the Fourth Proportional to 76,798.57, 115,220.53 and 39,384.84
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Solution
The fourth proportional to 76,798.57, 115,220.53 and 39,384.84 is: 59,088.89
Step by Step Solution
- Step 1: Write the proportion equation
76,798.57 : 115,220.53 = 39,384.84 : x - Step 2: Convert to fraction form
76,798.57/115,220.53 = 39,384.84/x - Step 3: Cross multiply
76,798.57x = 115,220.53 × 39,384.84 - Step 4: Simplify right side
76,798.57x = 4,537,942,398.53 - Step 5: Solve for x
x = 4,537,942,398.53/76,798.57 - Step 6: Final answer
x = 59,088.89
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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.