Finding the Fourth Proportional to 76,901.76, 115,341.12 and 63,838.08
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Solution
The fourth proportional to 76,901.76, 115,341.12 and 63,838.08 is: 95,747.56
Step by Step Solution
- Step 1: Write the proportion equation
76,901.76 : 115,341.12 = 63,838.08 : x - Step 2: Convert to fraction form
76,901.76/115,341.12 = 63,838.08/x - Step 3: Cross multiply
76,901.76x = 115,341.12 × 63,838.08 - Step 4: Simplify right side
76,901.76x = 7,363,155,645.85 - Step 5: Solve for x
x = 7,363,155,645.85/76,901.76 - Step 6: Final answer
x = 95,747.56
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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.