Finding the Fourth Proportional to 25,549,779.31, 38,324,670.64 and 20,408,136.09
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Solution
The fourth proportional to 25,549,779.31, 38,324,670.64 and 20,408,136.09 is: 30,612,205.47
Step by Step Solution
- Step 1: Write the proportion equation
25,549,779.31 : 38,324,670.64 = 20,408,136.09 : x - Step 2: Convert to fraction form
25,549,779.31/38,324,670.64 = 20,408,136.09/x - Step 3: Cross multiply
25,549,779.31x = 38,324,670.64 × 20,408,136.09 - Step 4: Simplify right side
25,549,779.31x = 782,135,094,025,547.38 - Step 5: Solve for x
x = 782,135,094,025,547.38/25,549,779.31 - Step 6: Final answer
x = 30,612,205.47
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1.5x scale
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.