Finding the Fourth Proportional to 78,732,208.80, 118,098,313.20 and 48,121,207.20
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Solution
The fourth proportional to 78,732,208.80, 118,098,313.20 and 48,121,207.20 is: 72,181,810.80
Step by Step Solution
- Step 1: Write the proportion equation
78,732,208.80 : 118,098,313.20 = 48,121,207.20 : x - Step 2: Convert to fraction form
78,732,208.80/118,098,313.20 = 48,121,207.20/x - Step 3: Cross multiply
78,732,208.80x = 118,098,313.20 × 48,121,207.20 - Step 4: Simplify right side
78,732,208.80x = 5,683,033,399,467,696 - Step 5: Solve for x
x = 5,683,033,399,467,696/78,732,208.80 - Step 6: Final answer
x = 72,181,810.80
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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.