Finding the Fourth Proportional to 43,178,975.62, 64,786,365.51 and 18,905,373.70
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Solution
The fourth proportional to 43,178,975.62, 64,786,365.51 and 18,905,373.70 is: 28,365,898.75
Step by Step Solution
- Step 1: Write the proportion equation
43,178,975.62 : 64,786,365.51 = 18,905,373.70 : x - Step 2: Convert to fraction form
43,178,975.62/64,786,365.51 = 18,905,373.70/x - Step 3: Cross multiply
43,178,975.62x = 64,786,365.51 × 18,905,373.70 - Step 4: Simplify right side
43,178,975.62x = 1,224,810,450,631,341 - Step 5: Solve for x
x = 1,224,810,450,631,341/43,178,975.62 - Step 6: Final answer
x = 28,365,898.75
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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.