Finding the Fourth Proportional to 105,463,382.68, 145,540,632.32 and 58,421,176.72
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Solution
The fourth proportional to 105,463,382.68, 145,540,632.32 and 58,421,176.72 is: 80,621,868.79
Step by Step Solution
- Step 1: Write the proportion equation
105,463,382.68 : 145,540,632.32 = 58,421,176.72 : x - Step 2: Convert to fraction form
105,463,382.68/145,540,632.32 = 58,421,176.72/x - Step 3: Cross multiply
105,463,382.68x = 145,540,632.32 × 58,421,176.72 - Step 4: Simplify right side
105,463,382.68x = 8,502,655,000,707,263 - Step 5: Solve for x
x = 8,502,655,000,707,263/105,463,382.68 - Step 6: Final answer
x = 80,621,868.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.