Finding the Fourth Proportional to 39,188,943.90, 54,082,130.27 and 21,549,188.97
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Solution
The fourth proportional to 39,188,943.90, 54,082,130.27 and 21,549,188.97 is: 29,738,643.84
Step by Step Solution
- Step 1: Write the proportion equation
39,188,943.90 : 54,082,130.27 = 21,549,188.97 : x - Step 2: Convert to fraction form
39,188,943.90/54,082,130.27 = 21,549,188.97/x - Step 3: Cross multiply
39,188,943.90x = 54,082,130.27 × 21,549,188.97 - Step 4: Simplify right side
39,188,943.90x = 1,165,426,045,101,855.25 - Step 5: Solve for x
x = 1,165,426,045,101,855.25/39,188,943.90 - Step 6: Final answer
x = 29,738,643.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.