Finding the Fourth Proportional to 38,498,991.42, 53,128,620.99 and 21,095,195.34
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Solution
The fourth proportional to 38,498,991.42, 53,128,620.99 and 21,095,195.34 is: 29,111,376.60
Step by Step Solution
- Step 1: Write the proportion equation
38,498,991.42 : 53,128,620.99 = 21,095,195.34 : x - Step 2: Convert to fraction form
38,498,991.42/53,128,620.99 = 21,095,195.34/x - Step 3: Cross multiply
38,498,991.42x = 53,128,620.99 × 21,095,195.34 - Step 4: Simplify right side
38,498,991.42x = 1,120,758,637,928,874.25 - Step 5: Solve for x
x = 1,120,758,637,928,874.25/38,498,991.42 - Step 6: Final answer
x = 29,111,376.60
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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.