Finding the Fourth Proportional to 39,122,578.80, 58,690,632.31 and 13,215,068.80
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Solution
The fourth proportional to 39,122,578.80, 58,690,632.31 and 13,215,068.80 is: 19,824,888.02
Step by Step Solution
- Step 1: Write the proportion equation
39,122,578.80 : 58,690,632.31 = 13,215,068.80 : x - Step 2: Convert to fraction form
39,122,578.80/58,690,632.31 = 13,215,068.80/x - Step 3: Cross multiply
39,122,578.80x = 58,690,632.31 × 13,215,068.80 - Step 4: Simplify right side
39,122,578.80x = 775,600,743,712,388.62 - Step 5: Solve for x
x = 775,600,743,712,388.62/39,122,578.80 - Step 6: Final answer
x = 19,824,888.02
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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.