Finding the Fourth Proportional to 38,719,784.30, 53,436,425.58 and 22,201,445.70
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Solution
The fourth proportional to 38,719,784.30, 53,436,425.58 and 22,201,445.70 is: 30,639,785.90
Step by Step Solution
- Step 1: Write the proportion equation
38,719,784.30 : 53,436,425.58 = 22,201,445.70 : x - Step 2: Convert to fraction form
38,719,784.30/53,436,425.58 = 22,201,445.70/x - Step 3: Cross multiply
38,719,784.30x = 53,436,425.58 × 22,201,445.70 - Step 4: Simplify right side
38,719,784.30x = 1,186,365,900,916,461 - Step 5: Solve for x
x = 1,186,365,900,916,461/38,719,784.30 - Step 6: Final answer
x = 30,639,785.90
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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.