Finding the Fourth Proportional to 81,551,184.20, 122,326,776.30 and 45,271,478.60
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Solution
The fourth proportional to 81,551,184.20, 122,326,776.30 and 45,271,478.60 is: 67,907,217.90
Step by Step Solution
- Step 1: Write the proportion equation
81,551,184.20 : 122,326,776.30 = 45,271,478.60 : x - Step 2: Convert to fraction form
81,551,184.20/122,326,776.30 = 45,271,478.60/x - Step 3: Cross multiply
81,551,184.20x = 122,326,776.30 × 45,271,478.60 - Step 4: Simplify right side
81,551,184.20x = 5,537,914,035,472,437 - Step 5: Solve for x
x = 5,537,914,035,472,437/81,551,184.20 - Step 6: Final answer
x = 67,907,217.90
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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.