Finding the Fourth Proportional to 81,780,376.80, 122,566,366.80 and 43,460,248.80
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Solution
The fourth proportional to 81,780,376.80, 122,566,366.80 and 43,460,248.80 is: 65,134,999.42
Step by Step Solution
- Step 1: Write the proportion equation
81,780,376.80 : 122,566,366.80 = 43,460,248.80 : x - Step 2: Convert to fraction form
81,780,376.80/122,566,366.80 = 43,460,248.80/x - Step 3: Cross multiply
81,780,376.80x = 122,566,366.80 × 43,460,248.80 - Step 4: Simplify right side
81,780,376.80x = 5,326,764,795,640,059 - Step 5: Solve for x
x = 5,326,764,795,640,059/81,780,376.80 - Step 6: Final answer
x = 65,134,999.42
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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.