Finding the Fourth Proportional to 80,998.65, 121,497.98 and 51,437.70
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Solution
The fourth proportional to 80,998.65, 121,497.98 and 51,437.70 is: 77,156.55
Step by Step Solution
- Step 1: Write the proportion equation
80,998.65 : 121,497.98 = 51,437.70 : x - Step 2: Convert to fraction form
80,998.65/121,497.98 = 51,437.70/x - Step 3: Cross multiply
80,998.65x = 121,497.98 × 51,437.70 - Step 4: Simplify right side
80,998.65x = 6,249,576,388.66 - Step 5: Solve for x
x = 6,249,576,388.66/80,998.65 - Step 6: Final answer
x = 77,156.55
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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.