Finding the Fourth Proportional to 85,461,968.04, 128,193,112.26 and 20,765,827.80
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Solution
The fourth proportional to 85,461,968.04, 128,193,112.26 and 20,765,827.80 is: 31,148,780.63
Step by Step Solution
- Step 1: Write the proportion equation
85,461,968.04 : 128,193,112.26 = 20,765,827.80 : x - Step 2: Convert to fraction form
85,461,968.04/128,193,112.26 = 20,765,827.80/x - Step 3: Cross multiply
85,461,968.04x = 128,193,112.26 × 20,765,827.80 - Step 4: Simplify right side
85,461,968.04x = 2,662,036,094,337,229 - Step 5: Solve for x
x = 2,662,036,094,337,229/85,461,968.04 - Step 6: Final answer
x = 31,148,780.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.