Finding the Fourth Proportional to 80,928,092.80, 121,392,139.20 and 71,574,731.20
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Solution
The fourth proportional to 80,928,092.80, 121,392,139.20 and 71,574,731.20 is: 107,362,096.80
Step by Step Solution
- Step 1: Write the proportion equation
80,928,092.80 : 121,392,139.20 = 71,574,731.20 : x - Step 2: Convert to fraction form
80,928,092.80/121,392,139.20 = 71,574,731.20/x - Step 3: Cross multiply
80,928,092.80x = 121,392,139.20 × 71,574,731.20 - Step 4: Simplify right side
80,928,092.80x = 8,688,609,733,032,984 - Step 5: Solve for x
x = 8,688,609,733,032,984/80,928,092.80 - Step 6: Final answer
x = 107,362,096.80
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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.