Finding the Fourth Proportional to 40,284,220.16, 60,438,121.56 and 12,989,963.99
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Solution
The fourth proportional to 40,284,220.16, 60,438,121.56 and 12,989,963.99 is: 19,488,748.19
Step by Step Solution
- Step 1: Write the proportion equation
40,284,220.16 : 60,438,121.56 = 12,989,963.99 : x - Step 2: Convert to fraction form
40,284,220.16/60,438,121.56 = 12,989,963.99/x - Step 3: Cross multiply
40,284,220.16x = 60,438,121.56 × 12,989,963.99 - Step 4: Simplify right side
40,284,220.16x = 785,089,022,687,642.62 - Step 5: Solve for x
x = 785,089,022,687,642.62/40,284,220.16 - Step 6: Final answer
x = 19,488,748.19
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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.