Finding the Fourth Proportional to 76,966.26, 106,212.39 and 42,975.31
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Solution
The fourth proportional to 76,966.26, 106,212.39 and 42,975.31 is: 59,305.34
Step by Step Solution
- Step 1: Write the proportion equation
76,966.26 : 106,212.39 = 42,975.31 : x - Step 2: Convert to fraction form
76,966.26/106,212.39 = 42,975.31/x - Step 3: Cross multiply
76,966.26x = 106,212.39 × 42,975.31 - Step 4: Simplify right side
76,966.26x = 4,564,510,386.09 - Step 5: Solve for x
x = 4,564,510,386.09/76,966.26 - Step 6: Final answer
x = 59,305.34
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.