Finding the Fourth Proportional to 38,853,828.63, 53,617,431.60 and 21,212,128.26
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Solution
The fourth proportional to 38,853,828.63, 53,617,431.60 and 21,212,128.26 is: 29,272,271.90
Step by Step Solution
- Step 1: Write the proportion equation
38,853,828.63 : 53,617,431.60 = 21,212,128.26 : x - Step 2: Convert to fraction form
38,853,828.63/53,617,431.60 = 21,212,128.26/x - Step 3: Cross multiply
38,853,828.63x = 53,617,431.60 × 21,212,128.26 - Step 4: Simplify right side
38,853,828.63x = 1,137,339,836,070,977.25 - Step 5: Solve for x
x = 1,137,339,836,070,977.25/38,853,828.63 - Step 6: Final answer
x = 29,272,271.90
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1.5x scale
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.