Finding the Fourth Proportional to 39,315,129.21, 54,256,725.72 and 21,911,599.08
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Solution
The fourth proportional to 39,315,129.21, 54,256,725.72 and 21,911,599.08 is: 30,239,036.35
Step by Step Solution
- Step 1: Write the proportion equation
39,315,129.21 : 54,256,725.72 = 21,911,599.08 : x - Step 2: Convert to fraction form
39,315,129.21/54,256,725.72 = 21,911,599.08/x - Step 3: Cross multiply
39,315,129.21x = 54,256,725.72 × 21,911,599.08 - Step 4: Simplify right side
39,315,129.21x = 1,188,851,621,370,164.25 - Step 5: Solve for x
x = 1,188,851,621,370,164.25/39,315,129.21 - Step 6: Final answer
x = 30,239,036.35
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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.