Finding the Fourth Proportional to 85,396,537.18, 117,759,142.80 and 73,047,512.88
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Solution
The fourth proportional to 85,396,537.18, 117,759,142.80 and 73,047,512.88 is: 100,730,226.12
Step by Step Solution
- Step 1: Write the proportion equation
85,396,537.18 : 117,759,142.80 = 73,047,512.88 : x - Step 2: Convert to fraction form
85,396,537.18/117,759,142.80 = 73,047,512.88/x - Step 3: Cross multiply
85,396,537.18x = 117,759,142.80 × 73,047,512.88 - Step 4: Simplify right side
85,396,537.18x = 8,602,012,500,420,758 - Step 5: Solve for x
x = 8,602,012,500,420,758/85,396,537.18 - Step 6: Final answer
x = 100,730,226.12
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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.