Finding the Fourth Proportional to 85,461,942.88, 128,193,074.76 and 20,765,802.68
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Solution
The fourth proportional to 85,461,942.88, 128,193,074.76 and 20,765,802.68 is: 31,148,743.00
Step by Step Solution
- Step 1: Write the proportion equation
85,461,942.88 : 128,193,074.76 = 20,765,802.68 : x - Step 2: Convert to fraction form
85,461,942.88/128,193,074.76 = 20,765,802.68/x - Step 3: Cross multiply
85,461,942.88x = 128,193,074.76 × 20,765,802.68 - Step 4: Simplify right side
85,461,942.88x = 2,662,032,095,408,648.50 - Step 5: Solve for x
x = 2,662,032,095,408,648.50/85,461,942.88 - Step 6: Final answer
x = 31,148,743.00
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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.