Finding the Fourth Proportional to 42,925,136.81, 64,414,189.11 and 19,891,778.05
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Solution
The fourth proportional to 42,925,136.81, 64,414,189.11 and 19,891,778.05 is: 29,849,939.87
Step by Step Solution
- Step 1: Write the proportion equation
42,925,136.81 : 64,414,189.11 = 19,891,778.05 : x - Step 2: Convert to fraction form
42,925,136.81/64,414,189.11 = 19,891,778.05/x - Step 3: Cross multiply
42,925,136.81x = 64,414,189.11 × 19,891,778.05 - Step 4: Simplify right side
42,925,136.81x = 1,281,312,752,625,317.25 - Step 5: Solve for x
x = 1,281,312,752,625,317.25/42,925,136.81 - Step 6: Final answer
x = 29,849,939.87
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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.