Finding the Fourth Proportional to 76,657.33, 114,968.71 and 21,257.65
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Solution
The fourth proportional to 76,657.33, 114,968.71 and 21,257.65 is: 31,881.68
Step by Step Solution
- Step 1: Write the proportion equation
76,657.33 : 114,968.71 = 21,257.65 : x - Step 2: Convert to fraction form
76,657.33/114,968.71 = 21,257.65/x - Step 3: Cross multiply
76,657.33x = 114,968.71 × 21,257.65 - Step 4: Simplify right side
76,657.33x = 2,443,964,598.13 - Step 5: Solve for x
x = 2,443,964,598.13/76,657.33 - Step 6: Final answer
x = 31,881.68
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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.