Finding the Fourth Proportional to 19,991,418.90, 29,987,128.67 and 4,845,350.40
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Solution
The fourth proportional to 19,991,418.90, 29,987,128.67 and 4,845,350.40 is: 7,268,025.68
Step by Step Solution
- Step 1: Write the proportion equation
19,991,418.90 : 29,987,128.67 = 4,845,350.40 : x - Step 2: Convert to fraction form
19,991,418.90/29,987,128.67 = 4,845,350.40/x - Step 3: Cross multiply
19,991,418.90x = 29,987,128.67 × 4,845,350.40 - Step 4: Simplify right side
19,991,418.90x = 145,298,145,871,809.22 - Step 5: Solve for x
x = 145,298,145,871,809.22/19,991,418.90 - Step 6: Final answer
x = 7,268,025.68
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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.