Finding the Fourth Proportional to 75,212.97, 112,743.51 and 47,152.74
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Solution
The fourth proportional to 75,212.97, 112,743.51 and 47,152.74 is: 70,681.50
Step by Step Solution
- Step 1: Write the proportion equation
75,212.97 : 112,743.51 = 47,152.74 : x - Step 2: Convert to fraction form
75,212.97/112,743.51 = 47,152.74/x - Step 3: Cross multiply
75,212.97x = 112,743.51 × 47,152.74 - Step 4: Simplify right side
75,212.97x = 5,316,165,413.72 - Step 5: Solve for x
x = 5,316,165,413.72/75,212.97 - Step 6: Final answer
x = 70,681.50
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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.