Finding the Fourth Proportional to 30,767,312.90, 42,471,965.25 and 19,170,605.97
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Solution
The fourth proportional to 30,767,312.90, 42,471,965.25 and 19,170,605.97 is: 26,463,582.09
Step by Step Solution
- Step 1: Write the proportion equation
30,767,312.90 : 42,471,965.25 = 19,170,605.97 : x - Step 2: Convert to fraction form
30,767,312.90/42,471,965.25 = 19,170,605.97/x - Step 3: Cross multiply
30,767,312.90x = 42,471,965.25 × 19,170,605.97 - Step 4: Simplify right side
30,767,312.90x = 814,213,310,579,282.50 - Step 5: Solve for x
x = 814,213,310,579,282.50/30,767,312.90 - Step 6: Final answer
x = 26,463,582.09
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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.