Finding the Fourth Proportional to 76,972,148.07, 115,457,246.16 and 18,680,305.92
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Solution
The fourth proportional to 76,972,148.07, 115,457,246.16 and 18,680,305.92 is: 28,020,222.03
Step by Step Solution
- Step 1: Write the proportion equation
76,972,148.07 : 115,457,246.16 = 18,680,305.92 : x - Step 2: Convert to fraction form
76,972,148.07/115,457,246.16 = 18,680,305.92/x - Step 3: Cross multiply
76,972,148.07x = 115,457,246.16 × 18,680,305.92 - Step 4: Simplify right side
76,972,148.07x = 2,156,776,678,949,545.50 - Step 5: Solve for x
x = 2,156,776,678,949,545.50/76,972,148.07 - Step 6: Final answer
x = 28,020,222.03
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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.