Finding the Fourth Proportional to 75,136,478.70, 112,703,113.50 and 20,549,064.42
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Solution
The fourth proportional to 75,136,478.70, 112,703,113.50 and 20,549,064.42 is: 30,823,157.80
Step by Step Solution
- Step 1: Write the proportion equation
75,136,478.70 : 112,703,113.50 = 20,549,064.42 : x - Step 2: Convert to fraction form
75,136,478.70/112,703,113.50 = 20,549,064.42/x - Step 3: Cross multiply
75,136,478.70x = 112,703,113.50 × 20,549,064.42 - Step 4: Simplify right side
75,136,478.70x = 2,315,943,539,646,072 - Step 5: Solve for x
x = 2,315,943,539,646,072/75,136,478.70 - Step 6: Final answer
x = 30,823,157.80
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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.