Finding the Fourth Proportional to 19,486,987.20, 29,230,480.80 and 5,110,027.20
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Solution
The fourth proportional to 19,486,987.20, 29,230,480.80 and 5,110,027.20 is: 7,665,040.80
Step by Step Solution
- Step 1: Write the proportion equation
19,486,987.20 : 29,230,480.80 = 5,110,027.20 : x - Step 2: Convert to fraction form
19,486,987.20/29,230,480.80 = 5,110,027.20/x - Step 3: Cross multiply
19,486,987.20x = 29,230,480.80 × 5,110,027.20 - Step 4: Simplify right side
19,486,987.20x = 149,368,551,957,077.78 - Step 5: Solve for x
x = 149,368,551,957,077.78/19,486,987.20 - Step 6: Final answer
x = 7,665,040.80
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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.