Finding the Fourth Proportional to 74,756,779.20, 112,135,168.80 and 20,169,259.20
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Solution
The fourth proportional to 74,756,779.20, 112,135,168.80 and 20,169,259.20 is: 30,253,888.80
Step by Step Solution
- Step 1: Write the proportion equation
74,756,779.20 : 112,135,168.80 = 20,169,259.20 : x - Step 2: Convert to fraction form
74,756,779.20/112,135,168.80 = 20,169,259.20/x - Step 3: Cross multiply
74,756,779.20x = 112,135,168.80 × 20,169,259.20 - Step 4: Simplify right side
74,756,779.20x = 2,261,683,284,962,953 - Step 5: Solve for x
x = 2,261,683,284,962,953/74,756,779.20 - Step 6: Final answer
x = 30,253,888.80
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Similar ratio
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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.