Finding the Fourth Proportional to 31,591,975.75, 47,387,963.67 and 7,657,447.75
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Solution
The fourth proportional to 31,591,975.75, 47,387,963.67 and 7,657,447.75 is: 11,486,171.64
Step by Step Solution
- Step 1: Write the proportion equation
31,591,975.75 : 47,387,963.67 = 7,657,447.75 : x - Step 2: Convert to fraction form
31,591,975.75/47,387,963.67 = 7,657,447.75/x - Step 3: Cross multiply
31,591,975.75x = 47,387,963.67 × 7,657,447.75 - Step 4: Simplify right side
31,591,975.75x = 362,870,855,781,923.25 - Step 5: Solve for x
x = 362,870,855,781,923.25/31,591,975.75 - Step 6: Final answer
x = 11,486,171.64
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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.